Native & Naturalized Plants of the Carolinas and Georgia

Listed below are 2632 names recognized by various authorities for some of the plants included on this website, as of 8/19/17. A plus sign indicates that the source further divides that species into varieties or subspecies. Click the scientific name to link to information and (maybe) pictures!

 

Abutilon abutilon — Manual of the Southeastern Flora (Small, 1933)
Acalypha virginica var. rhomboidea — World checklist of Euphorbiaceae (Govaerts, Frodin& Radcliffe-Smith, 2000)
Acanthoxanthium spinosum — Manual of the Southeastern Flora (Small, 1933)
Acer pseudo-platanus — Gray's Manual of Botany (Fernald, 1950)
Acerates floridana — Manual of the Southeastern Flora (Small, 1933)
Acetosa hastatula
Acetosella acetosella — Manual of the Southeastern Flora (Small, 1933)
Achyranthes japonica — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Achyranthes philoxeroides — Manual of the Southeastern Flora (Small, 1933)
Acmella repens — Flora of North America
Acnida alabamensis — Manual of the Southeastern Flora (Small, 1933)
Acnida cuspidata — Manual of the Southeastern Flora (Small, 1933)
Aconitum reclinatum — Manual of the Southeastern Flora (Small, 1933)
Aconitum reclinatum — Flora of North America
Aconitum uncinatum — Manual of the Southeastern Flora (Small, 1933)
Aconitum uncinatum — Flora of North America
Aconogonon polystachyum
Acosta diffusa
Actinomeris alternifolia — Vascular flora of Illinois (Mohlenbrock, 2014)
Actinospermum angustifolium — Manual of the Southeastern Flora (Small, 1933)
Acuan illinoense — Manual of the Southeastern Flora (Small, 1933)
Adicea pumila — Manual of the Southeastern Flora (Small, 1933)
Aesculus glabra — Manual of the Southeastern Flora (Small, 1933)
Agalinis virgata — Manual of the Southeastern Flora (Small, 1933)
Agaloma graminea
Ageratina aromatica var. incisa — PLANTS National Database
Ageratum houstonianum — Manual of the Southeastern Flora (Small, 1933)
Agrimonia bicknellii — Manual of the Southeastern Flora (Small, 1933)
Agrimonia gryposepala — Manual of the Southeastern Flora (Small, 1933)
Agrimonia gryposepala — Flora of North America
Agrimonia microcarpa — Manual of the Southeastern Flora (Small, 1933)
Agrimonia parviflora — Manual of the Southeastern Flora (Small, 1933)
Agrimonia platycarpa — Manual of the Southeastern Flora (Small, 1933)
Agrimonia pubescens — Manual of the Southeastern Flora (Small, 1933)
Agrimonia rostellata — Manual of the Southeastern Flora (Small, 1933)
Agrimonia rostellata — Flora of North America
Agropyron repens — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis alba — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis altissima — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis elliottiana — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis palustris — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis perennans — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis perennans var. elata — Manual of the Southeastern Flora (Small, 1933)
Agrostis perennans var. perennans — Manual of the Southeastern Flora (Small, 1933)
Agrostis stolonifera — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Agrostis tenuis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aira caryophyllea var. capillaris — Flora of North America
Aira elegantissima — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Aira flexuosa — Manual of the Southeastern Flora (Small, 1933)
Albizzia julibrissin — Manual of the Southeastern Flora (Small, 1933)
Aleurites fordii — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Alliaria officinalis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Allionia nyctaginea — Manual of the Southeastern Flora (Small, 1933)
Allium ampeloprasum var. atroviolaceum — Synthesis of the North American Flora (Kartesz, 1999)
Allium atroviolaceum — PLANTS National Database
Allium cernuum — Manual of the Southeastern Flora (Small, 1933)
Allium mutabile — Gray's Manual of Botany (Fernald, 1950)
Alnus alnus
Alnus rugosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Alnus viridis var. crispa — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Alopecurus carolinianus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Alopecurus ramosus — Manual of the Southeastern Flora (Small, 1933)
Alsine aquatica — Manual of the Southeastern Flora (Small, 1933)
Alsine media — Manual of the Southeastern Flora (Small, 1933)
Alsine pubera — Manual of the Southeastern Flora (Small, 1933)
Amaranthus polygonoides — Manual of the Southeastern Flora (Small, 1933)
Amarolea americana — Manual of the Southeastern Flora (Small, 1933)
Ambrosia porcheriorum
Amelanchier alabamensis — Manual of the Southeastern Flora (Small, 1933)
Amelanchier arborea var. alabamensis — Synthesis of the North American Flora (Kartesz, 1999)
Amelanchier oblongifolia — Manual of the Southeastern Flora (Small, 1933)
Amelanchier spicata — Floristic synthesis of North America. BONAP (Kartesz, 2010)
Amelanchier stolonifera — Manual of the Southeastern Flora (Small, 1933)
Ampelamus laevis — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Ampelopsis glandulosa var. brevipedunculata — Vitaceae (Chen, Ren, and Wen, 2007)
Ampelopsis heterophylla — Manual of the Southeastern Flora (Small, 1933)
Ampelothamnus phillyreifolius — Manual of the Southeastern Flora (Small, 1933)
Amphicarpon amphicarpon — Manual of the Southeastern Flora (Small, 1933)
Amphicarpum purshii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Amphistelma scoparia — Manual of the Southeastern Flora (Small, 1933)
Amsonia ciliata var. tenuifolia — PLANTS National Database
Amsonia tabernaemontana var. salicifolia — Vascular Flora of the Carolinas (1968)
Anacharis densa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Anchistea virginica — Manual of the Southeastern Flora (Small, 1933)
Andromeda glaucophylla — Gray's Manual of Botany (Fernald, 1950)
Andromeda polifolia var. latifolia — Flora of North America
Andromeda populifolia
Andropogon campyloracheus — Vascular Flora of the Carolinas
Andropogon capillipes — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon elliottii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon elliottii var. stenophyllus
Andropogon floridanus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon gerardii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon glomeratus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon glomeratus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon glomeratus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon glomeratus var. glaucopsis — Flora of North America
Andropogon longiberbis — Manual of the Southeastern Flora (Small, 1933)
Andropogon longiberbis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon mohrii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon perangustatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon scoparius var. scoparius — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon stolonifer — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon ternarius — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon virginicus var. glaucopsis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon virginicus var. glaucus — Flora of North America
Andropogon virginicus var. hirsutior
Andropogon virginicus var. virginicus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Andropogon virginicus var. virginicus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Anemone quinquefolia var. bifolia — Synthesis of the North American Flora (Kartesz, 1999)
Anemone quinquefolia var. quinquefolia — Flora of North America
Anemonella thalictroides — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Angelica curtisii — Manual of the Southeastern Flora (Small, 1933)
Angelica villosa — Manual of the Southeastern Flora (Small, 1933)
Antennaria calophylla — Manual of the Southeastern Flora (Small, 1933)
Antennaria fallax var. calophylla — Gray's Manual of Botany (Fernald, 1950)
Antennaria neglecta var. neglecta — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Antennaria neglecta var. neodioica — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Antennaria neodioica var. neodioica — Gray's Manual of Botany (Fernald, 1950)
Antennaria parlinii var. arnoglossa
Antennaria plantaginifolia var. parlinii
Antenoron virginianum — Studies of the southeastern United States flora (Horton, 1972)
Anthemis arvensis var. agrestis — Synthesis of the North American Flora (Kartesz, 1999)
Anthemis arvensis var. arvensis — Synthesis of the North American Flora (Kartesz, 1999)
Anthriscus scandicinus
Anticlea elegans — Resurrection of segregates of polyphyletic genus Zigadenus (Zomlefer & Judd 2002
Anychia canadensis — Manual of the Southeastern Flora (Small, 1933)
Arabidopsis lyrata ssp. lyrata — Flora of North America
Arabis burkii — Manual of the Southeastern Flora (Small, 1933)
Arabis laevigata — Manual of the Southeastern Flora (Small, 1933)
Arabis laevigata var. burkii — Vascular Flora of the Carolinas (1968)
Arabis lyrata — Manual of the Southeastern Flora (Small, 1933)
Arabis virginica — Manual of the Southeastern Flora (Small, 1933)
Arachis prostrata — Synthesis of the North American Flora (Kartesz, 1999)
Arenaria glabra — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Arenaria lanuginosa ssp. lanuginosa var. longipedunculata — PLANTS National Database
Arenaria leptoclados — Manual of the Southeastern Flora (Small, 1933)
Arenaria patula var. patula — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Arenaria serpyllifolia — Manual of the Southeastern Flora (Small, 1933)
Arenaria serpyllifolia ssp. leptoclados — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Arenaria serpyllifolia var. serpyllifolia — Flora of North America
arex nigro-marginata var. nigro-marginata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Argemone alba — Manual of the Southeastern Flora (Small, 1933)
Arisaema acuminatum — Manual of the Southeastern Flora (Small, 1933)
Arisaema pusillum — Manual of the Southeastern Flora (Small, 1933)
Arisaema quinatum — Manual of the Southeastern Flora (Small, 1933)
Arisaema triphyllum — Manual of the Southeastern Flora (Small, 1933)
Arisaema triphyllum — Flora of North America
Arisaema triphyllum ssp. pusillum — Biosystematics of the Arisaema triphyllum complex (Treiber, 1980)
Arisaema triphyllum var. acuminatum — Keys to the flora of Florida, Arisaema (Araceae) (Ward, 2012)
Arisaema triphyllum var. pusillum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Arisaema triphyllum var. triphyllum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Arisaema triphyllum var. triphyllum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Aristida condensata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristida longespica var. longespica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristida purpurascens — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristida spiciformis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristida stricta — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristida stricta — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristida stricta var. beyrichiana — New Combinations in the Florida Flora (DB Ward, 2001)
Aristida stricta var. stricta — New Combinations in the Florida Flora (DB Ward, 2001)
Aristida tuberculosa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Aristolochia convolvulacea — Manual of the Southeastern Flora (Small, 1933)
Aristolochia durior — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Aristolochia hastata — Manual of the Southeastern Flora (Small, 1933)
Aristolochia tomentosa — Manual of the Southeastern Flora (Small, 1933)
Arnoglossum muehlenbergii — Synthesis of the North American Flora (Kartesz, 1999)
Aronia atropurpurea — Manual of the Southeastern Flora (Small, 1933)
Artemisia ludoviciana var. gnaphalodes — Gray's Manual of Botany (Fernald, 1950)
Artemisia ludoviciana var. ludoviciana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Arundinaria gigantea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Arundinaria gigantea ssp. gigantea — Synthesis of the North American Flora (Kartesz, 1999)
Arundinaria gigantea ssp. tecta — Synthesis of the North American Flora (Kartesz, 1999)
Arundinaria gigantea ssp. tecta — Synthesis of the North American Flora (Kartesz, 1999)
Arundinaria tecta — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Arundinaria tecta var. decidua
Arundo donax var. donax — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Arundo donax var. versicolor — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Asarum acuminatum — Manual of the Southeastern Flora (Small, 1933)
Asarum arifolium — Gray's Manual of Botany (Fernald, 1950)
Asarum arifolium var. arifolium — New combinations in North American Asarum (Aristolochiaceae) (Barringer, 1993)
Asarum callifolium
Asarum canadense — Manual of the Southeastern Flora (Small, 1933)
Asarum canadense var. acuminatum — Gray's Manual of Botany (Fernald, 1950)
Asarum canadense var. reflexum — Gray's Manual of Botany (Fernald, 1950)
Asarum contractum — New combinations in North American Asarum (Aristolochiaceae) (Barringer, 1993)
Asarum contractum
Asarum heterophyllum — Flora of West Virginia (Strausbaugh & Core, 1978)
Asarum lewisii — Gray's Manual of Botany (Fernald, 1950)
Asarum minus
Asarum reflexum — Manual of the Southeastern Flora (Small, 1933)
Asarum rhombiformis
Asarum ruthii
Asarum shuttleworthii f. var. harperi — New combinations in North American Asarum (Aristolochiaceae) (Barringer, 1993)
Asarum shuttleworthii var. shuttleworthii — New combinations in North American Asarum (Aristolochiaceae) (Barringer, 1993)
Asarum virginicum — Linnaeus
Asclepias lanceolata var. paupercula — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Asclepias laurifolia — Manual of the Southeastern Flora (Small, 1933)
Asclepias longifolia ssp. hirtella — A new combination in Asclepias. Phytologia (Farmer & Bell, 1985)
Asclepias longifolia var. hirtella — Taxonomy of Asclepias hirtella & A. longifolia (Apocynaceae) (Turner, 2009)
Asclepias longifolia var. longifolia — Taxonomy of Asclepias hirtella & A. longifolia (Apocynaceae) (Turner, 2009)
Asclepias obovata — Manual of the Southeastern Flora (Small, 1933)
Asclepias pulchra — Manual of the Southeastern Flora (Small, 1933)
Asclepias rubra — Manual of the Southeastern Flora (Small, 1933)
Asclepiodora viridis — Manual of the Southeastern Flora (Small, 1933)
Ascyrum hypericoides — Manual of the Southeastern Flora (Small, 1933)
Ascyrum hypericoides var. multicaule — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ascyrum linifolium — Manual of the Southeastern Flora (Small, 1933)
Ascyrum pumilum — Manual of the Southeastern Flora (Small, 1933)
Ascyrum stans — Manual of the Southeastern Flora (Small, 1933)
Ascyrum tetrapetalum — Manual of the Southeastern Flora (Small, 1933)
Asemeia cumulicola — Manual of the Southeastern Flora (Small, 1933)
Asemeia grandiflora — Manual of the Southeastern Flora (Small, 1933)
Asimina incana — Trees, Shrubs, Woody Vines of north Florida & adjacent GA & AL (Godfrey, 1988)
Asimina triloba — Vascular Flora of the Carolinas (1968)
Asimina Xpiedmontana [parviflora X triloba] — A New Hybrid of Asimina (Annonaceae) (Horn, 2017)
Asparagus aethiopicus — Flora of North America
Asparagus officinalis — Manual of the Southeastern Flora (Small, 1933)
Asplenium Xpinnatifidum — Synthesis of the North American Flora (Kartesz, 1999)
Aster avitus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster camptosorus — Manual of the Southeastern Flora (Small, 1933)
Aster chlorolepis — Manual of the Southeastern Flora (Small, 1933)
Aster concinnus — Manual of the Southeastern Flora (Small, 1933)
Aster cordifolius — Manual of the Southeastern Flora (Small, 1933)
Aster cordifolius var. sagittifolius
Aster elodes — Manual of the Southeastern Flora (Small, 1933)
Aster eryngiifolius — Manual of the Southeastern Flora (Small, 1933)
Aster georgianus — Manual of the Southeastern Flora (Small, 1933)
Aster lanceolatus var. latifolius
Aster lanceolatus var. simplex — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Aster lowrieanus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster mirabilis — Manual of the Southeastern Flora (Small, 1933)
Aster patens var. patens — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Aster patens var. phlogifolius — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster phlogifolius — Manual of the Southeastern Flora (Small, 1933)
Aster pilosus var. pilosus — Gray's Manual of Botany (Fernald, 1950)
Aster praealtus — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Aster ptarmicoides — Manual of the Southeastern Flora (Small, 1933)
Aster puniceus var. elliottii
Aster radula — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Aster retroflexus — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Aster schreberi — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster sericeus — Manual of the Southeastern Flora (Small, 1933)
Aster sericocarpoides — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster shortii — Manual of the Southeastern Flora (Small, 1933)
Aster subulatus — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Aster subulatus var. ligulatus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster subulatus var. subulatus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Aster walteri — Manual of the Southeastern Flora (Small, 1933)
Astranthium integrifolium var. integrifolium — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Atamosco atamasco — Manual of the Southeastern Flora (Small, 1933)
Atamosco candida — Manual of the Southeastern Flora (Small, 1933)
Atamosco simpsonii — Manual of the Southeastern Flora (Small, 1933)
Atamosco treatiae — Manual of the Southeastern Flora (Small, 1933)
Athyrium asplenioides — Manual of the Southeastern Flora (Small, 1933)
Athyrium filix-femina var. angustum — Flora of North America
Athyrium filix-femina var. asplenioides — Flora of North America
Athyrium filix-femina var. michauxii — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Atragene americana — Manual of the Southeastern Flora (Small, 1933)
Aureolaria pedicularia var. pectinata — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Avena sativa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Axonopus affinis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Axonopus furcatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Azalea alabamensis — Manual of the Southeastern Flora (Small, 1933)
Azalea arborescens — Manual of the Southeastern Flora (Small, 1933)
Azalea atlantica — Manual of the Southeastern Flora (Small, 1933)
Azalea austrina — Manual of the Southeastern Flora (Small, 1933)
Azalea calendulacea — Manual of the Southeastern Flora (Small, 1933)
Azalea canescens — Manual of the Southeastern Flora (Small, 1933)
Azalea nudiflora — Manual of the Southeastern Flora (Small, 1933)
Azalea pilosa — Andre Michaux
Azalea prinophylla — Manual of the Southeastern Flora (Small, 1933)
Azalea prunifolia — Manual of the Southeastern Flora (Small, 1933)
Azalea speciosa — Manual of the Southeastern Flora (Small, 1933)
Azalea viscosa — Manual of the Southeastern Flora (Small, 1933)
Azolla filiculoides — Taxonomy of the American Azolla species (Azollaceae) (Evrard & Van Hove, 2004)
Azolla filiculoides — Taxonomy of the American Azolla species (Azollaceae) (Evrard & Van Hove, 2004)
Bacopa acuminata — Gray's Manual of Botany (Fernald, 1950)
Bacopa stragula — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Bambusa vulgaris — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Baptisia alba — Manual of the Southeastern Flora (Small, 1933)
Baptisia australis var. minor — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Baptisia lactea var. lactea — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Baptisia megacarpa — A monograph of the genus Baptisia (Larisey, 1940)
Baptisia minor var. aberrans — Monograph of genus Baptisia (M.M. Larisey, Missouri Botanical Garden, 1940a)
Baptisia pendula var. macrophylla — A monograph of the genus Baptisia (Larisey, 1940)
Barbarea verna — Flora of North America
Bartonia verna — Manual of the Southeastern Flora (Small, 1933)
Bartonia virginica — Manual of the Southeastern Flora (Small, 1933)
Batodendron arboreum — Manual of the Southeastern Flora (Small, 1933)
Batschia canescens — Manual of the Southeastern Flora (Small, 1933)
Batschia caroliniensis — Manual of the Southeastern Flora (Small, 1933)
Befaria racemosa — Manual of the Southeastern Flora (Small, 1933)
Benthamidia florida — New England Wildflower Society’s Flora Novae Angliae (Haines, 2011)
Benthamidia japonica — New England Wildflower Society’s Flora Novae Angliae (Haines, 2011)
Benzoin aestivale — Manual of the Southeastern Flora (Small, 1933)
Benzoin melissaefolium — Manual of the Southeastern Flora (Small, 1933)
Berberis bealei — Flora of North America
Berberis julianiae
Berberis nervosa — Flora of North America
Berberis repens — Flora of North America
Berchemia scandens — Manual of the Southeastern Flora (Small, 1933)
Berlandiera pumila — Flora of North America
Bicuculla canadensis — Manual of the Southeastern Flora (Small, 1933)
Bicuculla cucullaria — Manual of the Southeastern Flora (Small, 1933)
Bicuculla eximia — Manual of the Southeastern Flora (Small, 1933)
Bignonia radicans — Manual of the Southeastern Flora (Small, 1933)
Bilderdykia scandens — Manual of the Southeastern Flora (Small, 1933)
Biltia vaseyi — Manual of the Southeastern Flora (Small, 1933)
Biota orientalis — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis albiflora
Blephariglottis blephariglottis — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis ciliaris — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis conspicua — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis cristata — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis grandiflora — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis integrilabia
Blephariglottis lacera — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis peramoena — Manual of the Southeastern Flora (Small, 1933)
Blephariglottis psycodes — Manual of the Southeastern Flora (Small, 1933)
Blephilia ciliata — Manual of the Southeastern Flora (Small, 1933)
Blephilia hirsuta — Manual of the Southeastern Flora (Small, 1933)
Boechera laevigata — Transfer of most North American species of Arabis to Boechera (Al-Shehbaz,2003)
Boechera patens — Transfer of most North American species of Arabis to Boechera (Al-Shehbaz,2003)
Boehmeria cylindrica — Manual of the Southeastern Flora (Small, 1933)
Boehmeria drummondiana — Manual of the Southeastern Flora (Small, 1933)
Boehmeria nivea — Flora of North America
Boerhaavia erecta
Boerhavia diffusa — Flora of North America
Boerhavia erecta
Borreria laevis — Manual of the Southeastern Flora (Small, 1933)
Borreria verticillata
Botrychium dissectum — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Botrychium dissectum — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Botrychium matricariaefolium — Gray's Manual of Botany (Fernald, 1950)
Botrypus lunarioides — Andre Michaux
Bouteloua curtipendula — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bowlesia septentrionalis — Manual of the Southeastern Flora (Small, 1933)
Boykinia aconitifolia — Flora of North America
Brachiaria ramosa
Brachychaeta sphacelata — Manual of the Southeastern Flora (Small, 1933)
Brachyelytrum erectum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Brachyelytrum erectum var. erectum — Gray's Manual of Botany (Fernald, 1950)
Brachyelytrum erectum var. septentrionale — Gray's Manual of Botany (Fernald, 1950)
Brachyelytrum septentrionale — Synthesis of the North American Flora (Kartesz, 1999)
Bradburya virginiana — Manual of the Southeastern Flora (Small, 1933)
Brassica campestris — Manual of the Southeastern Flora (Small, 1933)
Brassica erucastrum — Linnaeus
Brassica rapa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Bromus arvensis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus catharticus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus commutatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus hordeaceus — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Bromus inermis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus japonicus var. japonicus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus japonicus var. porrectus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus purgans var. laeviglumis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus purgans var. purgans — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus racemosus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus racemosus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Bromus racemosus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Bromus secalinus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus sterilis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Bromus tectorum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Buckleya distichophylla — Manual of the Southeastern Flora (Small, 1933)
Buddleia davidii
Buddleia lindleyana
Bumelia lanuginosa — Manual of the Southeastern Flora (Small, 1933)
Bumelia thornei — Trees, Shrubs, Woody Vines of north Florida & adjacent GA & AL (Godfrey, 1988)
Burmannia biflora — Manual of the Southeastern Flora (Small, 1933)
Burmannia biflora — Flora of North America
Bursa bursa-pastoris — Manual of the Southeastern Flora (Small, 1933)
Butia capitata — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Buxella brachycera — Manual of the Southeastern Flora (Small, 1933)
Cacalia diversifolia — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Cacalia ovata — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Cacalia rugelia — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Cakile edentula ssp. harperi — Flora of North America
Cakile harperi — Manual of the Southeastern Flora (Small, 1933)
Calamagrostis cinnoides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Calamagrostis cinnoides — Flora of North America
Calamagrostis porteri — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Calamagrostis porteri ssp. porteri — Flora of North America
Calamintha ashei — Calamintha (Labiatae) in the southern United States (Shinners, 1962)
Calamintha coccinea — Calamintha (Labiatae) in the southern United States (Shinners, 1962)
Calamintha georgiana — Calamintha (Labiatae) in the southern United States (Shinners, 1962)
Calamintha nepeta ssp. glandulosa — PLANTS National Database:
Callicarpa americana — Manual of the Southeastern Flora (Small, 1933)
Callisia graminea — Flora of North America
Callisia rosea — Flora of North America
Calopogon oklahomensis — Flora of North America
Caltha palustris — Manual of the Southeastern Flora (Small, 1933)
Caltha palustris — Flora of North America
Calycanthus floridus var. floridus — Synthesis of the North American Flora (Kartesz, 1999)
Calycanthus floridus var. floridus — Vascular Flora of the Carolinas (1968)
Calyptocarpus vialis — Manual of the Southeastern Flora (Small, 1933)
Calystegia sepium — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Calystegia spithamaea — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Calystegia spithamaea ssp. stans — PLANTS National Database
Campanula uliginosa — Gray's Manual of Botany (Fernald, 1950)
Campanulastrum americanum — Manual of the Southeastern Flora (Small, 1933)
Campe barbarea — Manual of the Southeastern Flora (Small, 1933)
Campe stricta — Manual of the Southeastern Flora (Small, 1933)
Campe verna — Manual of the Southeastern Flora (Small, 1933)
Camphora camphora — Manual of the Southeastern Flora (Small, 1933)
Camptosorus rhizophyllus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Campulosus aromaticus — Manual of the Southeastern Flora (Small, 1933)
Campulosus floridanus — Manual of the Southeastern Flora (Small, 1933)
Canna flaccida — Manual of the Southeastern Flora (Small, 1933)
Capnoides flavulum — Manual of the Southeastern Flora (Small, 1933)
Capnoides halei — Manual of the Southeastern Flora (Small, 1933)
Capnoides micranthum — Manual of the Southeastern Flora (Small, 1933)
Capnoides sempervirens — Manual of the Southeastern Flora (Small, 1933)
Capriola dactylon — Manual of the Southeastern Flora (Small, 1933)
Capsella rubella — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carara didyma — Manual of the Southeastern Flora (Small, 1933)
Cardamine arenicola — Manual of the Southeastern Flora (Small, 1933)
Cardamine debilis — PLANTS National Database
Cardamine heterophylla
Cardamine multifida
Cardamine parviflora — Flora of North America
Cardamine rhomboidea — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Carduus marianus
Carduus nutans ssp. macrolepis — Synthesis of the North American Flora (Kartesz, 1999)
Carex asa-grayi — Manual of the Southeastern Flora (Small, 1933)
Carex cherokeensis — Manual of the Southeastern Flora (Small, 1933)
Carex fraseri — Flora of West Virginia (Strausbaugh & Core, 1978)
Carex grayii — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex laevi-vaginata — Manual of the Southeastern Flora (Small, 1933)
Carex laxiflora var. angustifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex laxiflora var. blanda — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex laxiflora var. gracillima — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex laxiflora var. latifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex laxiflora var. laxiflora — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex lupulina — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Carex lupulina — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Carex pennsylvanica — Manual of the Southeastern Flora (Small, 1933)
Carex virescens var. swanii
Carex vulpinoidea — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Carex vulpinoidea — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Carex vulpinoidea var. ambigua — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Carex walteriana — Manual of the Southeastern Flora (Small, 1933)
Carex walteriana var. walteriana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Carex willdenovii — Manual of the Southeastern Flora (Small, 1933)
Carex willdenovii — Manual of the Southeastern Flora (Small, 1933)
Carex willdenovii — Manual of the Southeastern Flora (Small, 1933)
Carex willdenowii var. megarrhyncha
Carphephorus odoratissimus var. odoratissimus — Flora of North America
Carphephorus paniculatus — Flora of North America
Cartrema americana — Synopsis of American Cartrema (Oleaceae) (Nesom, 2012)
Carya floridana — Flora of North America
Carya glabra — Flora of North America
Carya glabra — Flora of North America
Carya ovata var. australis — Flora of North America
Carya ovata var. ovata — Flora of North America
Carya texana — Flora of North America
Carya tomentosa — Flora of North America
Castalia flava — Manual of the Southeastern Flora (Small, 1933)
Castanea alnifolia+ — Vascular Flora of the Carolinas (1968)
Castanea pumila var. ashei — Vascular Flora of the Carolinas (1968)
Catalpa catalpa — Manual of the Southeastern Flora (Small, 1933)
Catharanthus roseus — Manual of the Southeastern Flora (Small, 1933)
Cathartolinum floridanum — Manual of the Southeastern Flora (Small, 1933)
Cathartolinum medium — Manual of the Southeastern Flora (Small, 1933)
Cathartolinum striatum — Manual of the Southeastern Flora (Small, 1933)
Cathartolinum virginianum — Manual of the Southeastern Flora (Small, 1933)
Causonis japonica — Flora of North America
Celastrus orbiculata — Synthesis of the North American Flora (Kartesz, 1999)
Celtis georgiana — Manual of the Southeastern Flora (Small, 1933)
Celtis laevigata var. laevigata — Gray's Manual of Botany (Fernald, 1950)
Celtis laevigata var. smallii
Celtis mississippiensis — Manual of the Southeastern Flora (Small, 1933)
Celtis occidentalis — Manual of the Southeastern Flora (Small, 1933)
Celtis occidentalis — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Celtis smallii — Manual of the Southeastern Flora (Small, 1933)
Celtis tenuifolia var. georgiana — Gray's Manual of Botany (Fernald, 1950)
Cenchrus brownii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Cenchrus incertus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Cenchrus pauciflorus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Cenchrus tribuloides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Cenchrus viridis — Manual of the Southeastern Flora (Small, 1933)
Centaurea biebersteinii — Synthesis of the North American Flora (Kartesz, 1999)
Centaurea repens — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Centaurea transalpina — PLANTS National Database
Centella repanda — Manual of the Southeastern Flora (Small, 1933)
Centunculus minimus — Manual of the Southeastern Flora (Small, 1933)
Cerastium brachypetalum ssp. brachypetalum — Synthesis of the North American Flora (Kartesz, 1999)
Cerastium longepedunculatum — Manual of the Southeastern Flora (Small, 1933)
Cerastium vulgatum — Manual of the Southeastern Flora (Small, 1933)
Cerasus avium
Chaerophyllum tainturieri var. dasycarpum — PLANTS National Database
Chaerophyllum teinturi*ri — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa corrugata — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa geniculata — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa italica — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa lutescens — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa magna — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa verticillata — Manual of the Southeastern Flora (Small, 1933)
Chaetochloa viridis — Manual of the Southeastern Flora (Small, 1933)
Chamaenerion angustifolium — Manual of the Southeastern Flora (Small, 1933)
Chamaenerion angustifolium ssp. circumvagum
Chamaepericlymenum canadense — New England Wildflower Society’s Flora Novae Angliae (Haines, 2011)
Chamaesyce hirta — Manual of the Southeastern Flora (Small, 1933)
Chamaesyce hypericifolia — Manual of the Southeastern Flora (Small, 1933)
Chamaesyce ingallsii — Manual of the Southeastern Flora (Small, 1933)
Chamaesyce maculata — Manual of the Southeastern Flora (Small, 1933)
Chamaesyce polygonifolia — Manual of the Southeastern Flora (Small, 1933)
Cheilanthes alabamensis — Manual of the Southeastern Flora (Small, 1933)
Cheilanthes lanosa — Manual of the Southeastern Flora (Small, 1933)
Cheilanthes tomentosa — Manual of the Southeastern Flora (Small, 1933)
Cheilanthes vestita — Gray's Manual of Botany (Fernald, 1950)
Chelone lyoni — Manual of the Southeastern Flora (Small, 1933)
Chenopodium album — Flora of North America
Chenopodium album var. missouriense — PLANTS National Database
Chenopodium ambrosioides var. ambrosioides — Gray's Manual of Botany (Fernald, 1950)
Chenopodium ambrosioides var. ambrosioides — Synthesis of the North American Flora (Kartesz, 1999)
Chenopodium ambrosioides var. ambrosioides — Synthesis of the North American Flora (Kartesz, 1999)
Chenopodium ambrosioides var. anthelminticum — Gray's Manual of Botany (Fernald, 1950)
Chiogenes hispidula — Manual of the Southeastern Flora (Small, 1933)
Chloris petraea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Chloris petraea — Manual of the Southeastern Flora (Small, 1933)
Christella normalis — Manual of the Southeastern Flora (Small, 1933)
Chrosperma muscaetoxicum — Manual of the Southeastern Flora (Small, 1933)
Chrysopsis camporum var. glandulissima — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Chrysopsis graminifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Chrysopsis graminifolia var. aspera — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Chrysopsis graminifolia var. aspera — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Chrysopsis graminifolia var. microcephala — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Chrysopsis graminifolia var. microcephala — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Chrysopsis oligantha — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Chrysopsis pilosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Chrysopsis pinifolia — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Chrysopsis ruthii — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Ciclospermum ammi — Manual of the Southeastern Flora (Small, 1933)
Ciclospermum leptophyllum
Cinna arundinacea var. arundinacea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Cinna arundinacea var. inexpansa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Circaea alpina var. alpina — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Circaea latifolia — Manual of the Southeastern Flora (Small, 1933)
Circaea quadrisulcata var. canadensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Cirsium odoratum — Manual of the Southeastern Flora (Small, 1933)
Cissus incisa — Manual of the Southeastern Flora (Small, 1933)
Cissus trifoliata — Flora of North America
Cleistes divaricata var. bifaria — Gray's Manual of Botany (Fernald, 1950)
Cleistes divaricata var. bifaria — Gray's Manual of Botany (Fernald, 1950)
Cleistes divaricata var. divaricata — Gray's Manual of Botany (Fernald, 1950)
Cleistesiopsis bifaria — Flora of Virginia (Weakley, Ludwig & Townsend, 2012)
Cleome rutidosperma — Flora of North America
Cleome spinosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Cliftonia monophylla — Manual of the Southeastern Flora (Small, 1933)
Cliftonia monophylla — Flora of North America
Clinopodium nepeta — Manual of the Southeastern Flora (Small, 1933)
Cnidoscolus stimulosus — Synthesis of the North American Flora (Kartesz, 1999)
Cochranea anchusaefolia — Manual of the Southeastern Flora (Small, 1933)
Cocos nucifera — Manual of the Southeastern Flora (Small, 1933)
Coeloglossum bracteatum — Manual of the Southeastern Flora (Small, 1933)
Coeloglossum viride — Flora of North America
Coleosanthus cordifolius — Manual of the Southeastern Flora (Small, 1933)
Collinsia verna — Manual of the Southeastern Flora (Small, 1933)
Collinsonia canadensis — A taxonomic revision of Collinsonia (Peirson, Cantino, & Ballard, 2006)
Collinsonia canadensis — A taxonomic revision of Collinsonia (Peirson, Cantino, & Ballard, 2006)
Collinsonia punctata — Manual of the Southeastern Flora (Small, 1933)
Colocasia antiquorum — Manual of the Southeastern Flora (Small, 1933)
Comandra richardsiana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Comandra umbellata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Commelina communis var. communis — Synthesis of the North American Flora (Kartesz, 1999)
Commelina communis var. ludens — Synthesis of the North American Flora (Kartesz, 1999)
Commelina crispa — Manual of the Southeastern Flora (Small, 1933)
Convallaria majalis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Convallaria montana — Gray's Manual of Botany (Fernald, 1950)
Convolvulus sepium + — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Convolvulus sepium var. fraterniflorus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Convolvulus sericatus — Manual of the Southeastern Flora (Small, 1933)
Convolvulus spithamaeus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Convolvulus spithamaeus — Manual of the Southeastern Flora (Small, 1933)
Coptis groenlandica — Gray's Manual of Botany (Fernald, 1950)
Corallorrhiza maculata — Manual of the Southeastern Flora (Small, 1933)
Corallorrhiza odontorhiza — Manual of the Southeastern Flora (Small, 1933)
Corallorrhiza wisteriana — Manual of the Southeastern Flora (Small, 1933)
Corculum leptopum
Corculum leptopus
Coreopsis cardaminefolia — Vascular Flora of the Carolinas (1968)
Coreopsis delphinifolia — Manual of the Southeastern Flora (Small, 1933)
Coreopsis gladiata — Flora of North America
Coreopsis gladiata — Flora of North America
Coronilla varia — Synthesis of the North American Flora (Kartesz, 1999)
Corydalis micrantha var. australis — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Corydalis micrantha var. micrantha — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Cotinus americanus — Manual of the Southeastern Flora (Small, 1933)
Cotoneaster pyracantha — Manual of the Southeastern Flora (Small, 1933)
Cracca hispidula — Manual of the Southeastern Flora (Small, 1933)
Cracca spicata — Manual of the Southeastern Flora (Small, 1933)
Cracca virginiana — Manual of the Southeastern Flora (Small, 1933)
Crataegus aemula — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus aestivalis — Flora of North America
Crataegus aestivalis — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus alabamensis — Flora of North America
Crataegus alabamensis var. alabamensis — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus alabamensis var. florens — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus alabamensis var. ravenelii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus alabamensis var. teres
Crataegus alleghaniensis var. extraria — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus allegheniensis var. allegheniensis — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus allegheniensis var. ignava — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus allegheniensis var. mira — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus aprica — Flora of North America
Crataegus aprica — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus ashei — Flora of North America
Crataegus ashei — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus berberifolia var. berberifolia — Flora of North America
Crataegus berberifolia var. berberifolia — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus berberifolia var. engelmannii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus biltmoreana — Flora of North America
Crataegus boyntoni — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Crataegus brachyacantha — Flora of North America
Crataegus brachyacantha — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus brittonii — Flora of North America
Crataegus buckleyi — Flora of North America
Crataegus buckleyi — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus calpodendron — Flora of North America
Crataegus calpodendron — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus coccinea — Flora of North America
Crataegus coccinea — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus collina — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus collina var. collina — Flora of North America
Crataegus colonica — Flora of North America
Crataegus concinna — Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus condigna — Flora of North America
Crataegus craytonii — Flora of North America
Crataegus craytonii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus crocea — Flora of North America
Crataegus crus-galli var. crus-galli — Flora of North America
Crataegus crus-galli var. crus-galli — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus crus-galli var. pyracanthifolia — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus dispar — Flora of North America
Crataegus dispar — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus disperma — Flora of North America
Crataegus disperma — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus dodgei var. dodgei — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus dodgei var. flavida — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus egens — Flora of North America
Crataegus engelmannii — Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus flava — Flora of North America
Crataegus flava — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus florens — Flora of North America
Crataegus floridana — Flora of North America
Crataegus fortunata
Crataegus furtiva — Flora of North America
Crataegus furtiva — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus gattingeri — Flora of North America
Crataegus geniculata — Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus harbisonii — Flora of North America
Crataegus harbisonii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus integra — Flora of North America
Crataegus intricata — Flora of North America
Crataegus intricata var. biltmoreana — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus intricata var. boyntonii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus intricata var. fortunata — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus intricata var. intricata — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus intricata var. neobushii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus intricata var. rubella — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus intricata var. straminea — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus iracunda var. iracunda — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus iracunda var. populnea — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lacrimata — Flora of North America
Crataegus lacrimata — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lanata — Flora of North America
Crataegus lancei — Flora of North America
Crataegus lancei — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lassa — Flora of North America
Crataegus lassa var. colonica — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lassa var. integra — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lassa var. lanata — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lassa var. lassa — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lassa var. recurva — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus lepida — Flora of North America
Crataegus lepida — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus macrosperma — Flora of North America
Crataegus macrosperma — Manual of the Southeastern Flora (Small, 1933)
Crataegus macrosperma — Manual of the Southeastern Flora (Small, 1933)
Crataegus macrosperma — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus margarettae — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus margarettae var. margarettae — Flora of North America
Crataegus marshallii — Flora of North America
Crataegus marshallii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus mendosa — Flora of North America
Crataegus mendosa — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus meridionalis — PLANTS National Database
Crataegus mollis var. mollis — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus monogyna — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus monogyna var. monogyna — Flora of North America
Crataegus munda — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus munda var. pexa — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus neobushii — Flora of North America
Crataegus neofluvialis — Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus opaca — Flora of North America
Crataegus opaca — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus opima — Flora of North America
Crataegus pennsylvanica
Crataegus pennsylvanica
Crataegus pexa — Flora of North America
Crataegus phaenopyrum — Flora of North America
Crataegus phaenopyrum — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pruinosa var. gattingeri — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pruinosa var. gattingeri — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pruinosa var. pruinosa — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pulcherrima var. incilis — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pulcherrima var. opima — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pulcherrima var. pulcherrima — Flora of North America
Crataegus pulcherrima var. pulcherrima — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus punctata — Flora of North America
Crataegus punctata — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus pyracanthoides — Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus quaesita — Flora of North America
Crataegus quaesita var. egens — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus quaesita var. floridana — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus quaesita var. quaesita — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus reverchonii var. mohrii — Flora of North America
Crataegus reverchonii var. palmeri — Flora of North America
Crataegus rubella — Flora of North America
Crataegus sargentii — Flora of North America
Crataegus sargentii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus schuettei — Flora of North America
Crataegus schuettei — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus senta — Flora of North America
Crataegus senta — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus sororia — Flora of North America
Crataegus sororia var. sororia — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus sororia var. visenda — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus spathulata — Flora of North America
Crataegus spathulata — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus straminea — Flora of North America
Crataegus succulenta var. neofluvialis — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus succulenta var. succulenta — Flora of North America
Crataegus succulenta var. succulenta — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus teres — Flora of North America
Crataegus triflora — Flora of North America
Crataegus triflora — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus uniflora — Flora of North America
Crataegus uniflora var. brittonii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus uniflora var. uniflora — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus venusta — Flora of North America
Crataegus venusta — Flora of North America
Crataegus venusta var. pallens — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus venusta var. venusta — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus viridis + — Flora of North America
Crataegus viridis + — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus visenda — Flora of North America
Crataegus Xmohrii — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus Xoreophila — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus Xpalmeri — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus Xrufula — Flora of North America
Crataegus Xrufula — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus Xvailiae — Flora of North America
Crataegus Xvailiae — Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crinum americanum var. americanum — Flora of North America
Crocanthemum canadense — Manual of the Southeastern Flora (Small, 1933)
Crocanthemum canadense — Flora of North America
Crocanthemum carolinianum — Manual of the Southeastern Flora (Small, 1933)
Crocanthemum carolinianum — Flora of North America
Crocanthemum georgianum — Manual of the Southeastern Flora (Small, 1933)
Crocanthemum georgianum — Flora of North America
Crocanthemum rosmarinifolium — Manual of the Southeastern Flora (Small, 1933)
Crocanthemum rosmarinifolium — Flora of North America
Crotalaria brevidens var. intermedia
Crotalaria maritima — Manual of the Southeastern Flora (Small, 1933)
Crotalaria purshii — Manual of the Southeastern Flora (Small, 1933)
Crotalaria rotundifolia — Manual of the Southeastern Flora (Small, 1933)
Croton alabamensis — Manual of the Southeastern Flora (Small, 1933)
Croton argyranthemus — Manual of the Southeastern Flora (Small, 1933)
Croton michauxii — Synthesis of the North American Flora (Kartesz, 1999)
Croton michauxii var. elliptica — Circumscription of Croton section Crotonopsis (van Ee & Berry, 2009)
Croton michauxii var. michauxii — Circumscription of Croton section Crotonopsis (van Ee & Berry, 2009)
Croton willdenowii — Synthesis of the North American Flora (Kartesz, 1999)
Ctenium floridanum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Cubelium concolor — Manual of the Southeastern Flora (Small, 1933)
Cupressus thyoides — Linnaeus
Cuscuta compacta var. efimbriata — PLANTS National Database
Cuscuta glandulosa — Manual of the Southeastern Flora (Small, 1933)
Cuscuta gronovii var. latiflora — Synthesis of the North American Flora (Kartesz, 1999)
Cuthbertia graminea — Manual of the Southeastern Flora (Small, 1933)
Cuthbertia rosea — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus amoenus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus atrococcus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus corymbosus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus elliottii — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus fuscatus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus hirsutus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus myrsinites var. glaucum — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus myrsinites var. myrsinites — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus pallidus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus simulatus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus tenellus — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus vacillans — Manual of the Southeastern Flora (Small, 1933)
Cyanococcus virgatus — Manual of the Southeastern Flora (Small, 1933)
Cyclosorus dentatus — Flora of China
Cynodon dactylon var. dactylon — Flora of North America
Cynoglossum virginicum — Manual of the Southeastern Flora (Small, 1933)
Cynoxylon floridum — Manual of the Southeastern Flora (Small, 1933)
Cynoxylon kousa
Cynthia dandelion — Manual of the Southeastern Flora (Small, 1933):Cynthia dandelion
Cynthia montana — Manual of the Southeastern Flora (Small, 1933)
Cynthia virginica — Manual of the Southeastern Flora (Small, 1933)
Cyperus aristatus — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Cyperus articulatus — Manual of the Southeastern Flora (Small, 1933)
Cyperus compressus — Manual of the Southeastern Flora (Small, 1933)
Cyperus engelmannii — Manual of the Southeastern Flora (Small, 1933)
Cyperus erythrorhizos — Manual of the Southeastern Flora (Small, 1933)
Cyperus ferruginescens — Vascular Flora of the Carolinas (1968)
Cyperus globosus — Manual of the Southeastern Flora (Small, 1933)
Cyperus halei — Manual of the Southeastern Flora (Small, 1933)
Cyperus inflexus — Manual of the Southeastern Flora (Small, 1933)
Cyperus inflexus — Manual of the Southeastern Flora (Small, 1933)
Cyperus iria — Manual of the Southeastern Flora (Small, 1933)
Cyperus lancastriensis
Cyperus multiflorus — Manual of the Southeastern Flora (Small, 1933)
Cyperus retrofractus — Manual of the Southeastern Flora (Small, 1933)
Cyperus retrofractus var. retrofractus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Cyperus retrorsus — Manual of the Southeastern Flora (Small, 1933)
Cyperus tenuifolius — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Cyperus torreyi — Manual of the Southeastern Flora (Small, 1933)
Cyperus virens — Manual of the Southeastern Flora (Small, 1933)
Cypripedium calceolus var. parviflorum — Gray's Manual of Botany (Fernald, 1950)
Cypripedium parviflorum — Synthesis of the North American Flora (Kartesz, 1999)
Cypripedium pubescens — Synthesis of the North American Flora (Kartesz, 1999)
Cyrilla racemiflora — Flora of North America
Cystopteris bulbifera — Manual of the Southeastern Flora (Small, 1933)
Cystopteris fragilis — Flora of West Virginia (Strausbaugh & Core, 1978)
Cystopteris fragilis — Flora of West Virginia (Strausbaugh & Core, 1978)
Cystopteris fragilis var. fragilis — Manual of the Southeastern Flora (Small, 1933)
Cystopteris fragilis var. mackayi — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Cystopteris fragilis var. protrusa — Manual of the Southeastern Flora (Small, 1933)
Cystopteris fragilis var. tennesseensis
Cystopteris Xtennesseensis — Flora of West Virginia (Strausbaugh & Core, 1978)
Dactylis glomerata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Dactyloctenium aegyptium — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Dactyloctenium aegyptium — Manual of the Southeastern Flora (Small, 1933)
Danthonia compressa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Danthonia compressa — Flora of North America
Danthonia epilis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Danthonia sericea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Danthonia sericea — Flora of North America
Danthonia sericea — Flora of North America
Danthonia spicata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Danthonia spicata — Flora of North America
Dasystephana parvifolia — Manual of the Southeastern Flora (Small, 1933)
Dasystephana porphyrio — Manual of the Southeastern Flora (Small, 1933)
Dasystephana villosa — Manual of the Southeastern Flora (Small, 1933)
Dasystoma macrophylla
Decachaena baccata — Manual of the Southeastern Flora (Small, 1933)
Decachaena frondosa — Manual of the Southeastern Flora (Small, 1933)
Decachaena tomentosa — Manual of the Southeastern Flora (Small, 1933)
Decachaena ursina — Manual of the Southeastern Flora (Small, 1933)
Decemium appendiculatum — Manual of the Southeastern Flora (Small, 1933)
Delphinium carolinianum — Manual of the Southeastern Flora (Small, 1933)
Delphinium carolinianum — Manual of the Southeastern Flora (Small, 1933)
Delphinium carolinianum var. carolinianum — Gray's Manual of Botany (Fernald, 1950)
Delphinium carolinianum var. carolinianum — Gray's Manual of Botany (Fernald, 1950)
Dentaria diphylla — Manual of the Southeastern Flora (Small, 1933)
Dentaria heterophylla — Manual of the Southeastern Flora (Small, 1933)
Dentaria laciniata — Manual of the Southeastern Flora (Small, 1933)
Dentaria multifida — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Deparia japonica
Deringa canadensis — Manual of the Southeastern Flora (Small, 1933)
Deschampsia caespitosa var. caespitosa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Deschampsia cespitosa ssp. glauca — Synthesis of the North American Flora (Kartesz, 1999)
Deschampsia flexuosa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Desmodium glabellum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Desmodium glabellum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Desmodium paniculatum var. dillenii — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Desmodium paniculatum var. dillenii — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Desmodium viridiflorum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Desmodium viridiflorum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Desmothamnus lucidus — Manual of the Southeastern Flora (Small, 1933)
Deutzia crenata — PLANTS National Database
Dianthera americana — Manual of the Southeastern Flora (Small, 1933)
Dicerandra linearifolia — Manual of the Southeastern Flora (Small, 1933)
Dichanthelium aciculare ssp. aciculare — Flora of North America
Dichanthelium aciculare ssp. angustifolium — Flora of North America
Dichanthelium aciculare ssp. fusiforme — Flora of North America
Dichanthelium aciculare ssp. neuranthum — Flora of North America
Dichanthelium acuminatum ssp. longiligulatum — Flora of North America
Dichanthelium acuminatum var. implicatum — Synthesis of the North American Flora (Kartesz, 1999)
Dichanthelium clandestinum — Flora of North America
Dichanthelium dichotomum ssp. lucidum — Flora of North America
Dichanthelium dichotomum ssp. lucidum — Flora of North America
Dichanthelium dichotomum ssp. mattamuskeetense — Flora of North America
Dichanthelium dichotomum ssp. mattamuskeetense — Flora of North America
Dichanthelium dichotomum ssp. roanokense — Flora of North America
Dichanthelium dichotomum ssp. yadkinense — Flora of North America
Dichanthelium erectifolium — Flora of North America
Dichanthelium latifolium — Flora of North America
Dichanthelium leucoblepharis var. glabrescens — Dichanthelium (Poaceae) in the United States and Canada (Gould & Clark, 1978)
Dichanthelium leucoblepharis var. pubescens — Dichanthelium (Poaceae) in the United States and Canada (Gould & Clark, 1978)
Dichanthelium oligosanthes ssp. oligosanthes — Flora of North America
Dichanthelium polyanthes — Flora of North America
Dichanthelium ravenelii — Flora of North America
Dichanthelium scoparium — Flora of North America
Dichondra carolinensis — Manual of the Southeastern Flora (Small, 1933)
Dichondra repens var. carolinensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Digitaria bicornis — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Digitaria filiformis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Digitaria sanguinalis var. ciliaris — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Digitaria sanguinalis var. sanguinalis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Diodella teres — Revisión de las especies americanas del g*nero Diodia (Bacigalupo & Cabral 1999)
Dionaea muscipula — Manual of the Southeastern Flora (Small, 1933)
Dioscorea hirticaulis — Manual of the Southeastern Flora (Small, 1933)
Dioscorea quaternata — Manual of the Southeastern Flora (Small, 1933)
Dioscorea villosa var. hirticaulis — Vascular Flora of the Carolinas
Diospyros kaki — Flora of North America
Diplaziopsis pycnocarpa
Diplazium acrostichoides — Manual of the Southeastern Flora (Small, 1933)
Diplazium japonicum
Diplostachyon ludovicianum — Manual of the Southeastern Flora (Small, 1933)
Diplostachyum apodum — Manual of the Southeastern Flora (Small, 1933)
Dipsacus fullonum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Dipsacus fullonum ssp. sylvestris
Dirca palustris — Manual of the Southeastern Flora (Small, 1933)
Disakisperma dubia — A molecular phylogeny of Leptochloa (Poaceae: Chloridoideae: Chlorideae) (Peters
Ditremexa medsgeri — Manual of the Southeastern Flora (Small, 1933)
Doellingeria infirma — Manual of the Southeastern Flora (Small, 1933)
Doellingeria sericocarpoides — Manual of the Southeastern Flora (Small, 1933)
Doellingeria umbellata — Manual of the Southeastern Flora (Small, 1933)
Dracocephalum leptophyllum — Manual of the Southeastern Flora (Small, 1933)
Dracocephalum virginianum — Manual of the Southeastern Flora (Small, 1933)
Drosera filiformis var. filiformis — Gray's Manual of Botany (Fernald, 1950)
Drosera filiformis var. tracyi — Carnivorous plants of the US & Canada (Schnell, 2002)
Drosera tracyi — Manual of the Southeastern Flora (Small, 1933)
Drymaria cordata — Manual of the Southeastern Flora (Small, 1933)
Dryopteris goldiana ssp. celsa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Dryopteris hexagonoptera — Gray's Manual of Botany (Fernald, 1950)
Dryopteris noveboracensis — Gray's Manual of Botany (Fernald, 1950)
Dryopteris setigera — Manual of the Southeastern Flora (Small, 1933)
Dryopteris simulata — Gray's Manual of Botany (Fernald, 1950)
Dryopteris spinulosa var. intermedia — Gray's Manual of Botany (Fernald, 1950)
Dryopteris thelypteris var. pubescens — Gray's Manual of Botany (Fernald, 1950)
Dulichium arundinaceum — Synthesis of the North American Flora (Kartesz, 1999)
Echinacea angustifolia var. tennesseensis
Echinacea pallida — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Echinacea pallida var. simulata — A taxonomic revision of Echinacea (Binns, Baum &Arnason, 2002)
Echinochloa colona — Manual of the Southeastern Flora (Small, 1933)
Echinochloa colonum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Echinochloa crus-galli ssp. crus-galli — Manual of the Southeastern Flora (Small, 1933)
Echinochloa crus-galli ssp. crus-galli — Manual of the Southeastern Flora (Small, 1933)
Echinochloa crus-galli ssp. crus-galli — Manual of the Southeastern Flora (Small, 1933)
Echinochloa crus-pavonis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Echinochloa crus-pavonis var. crus-pavonis — Flora of North America
Echinochloa microstachya — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Echinochloa muricata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Echinochloa walteri — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Echinochloa walteri — Manual of the Southeastern Flora (Small, 1933)
Echinodorus cordifolius ssp. cordifolius — Flora of North America
Elaeagnus multiflorus — Manual of the Southeastern Flora (Small, 1933)
Elaeagnus umbellatus — Manual of the Southeastern Flora (Small, 1933)
Eleocharis baldwinii — Manual of the Southeastern Flora (Small, 1933)
Eleocharis caribaea — Manual of the Southeastern Flora (Small, 1933)
Eleocharis prolifera — Manual of the Southeastern Flora (Small, 1933)
Eleusine indica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Endorima atropurpurea — Manual of the Southeastern Flora (Small, 1933)
Endorima uniflora — Manual of the Southeastern Flora (Small, 1933)
Epibaterium carolinum — Manual of the Southeastern Flora (Small, 1933)
Epidendrum conopseum var. conopseum — Synthesis of the North American Flora (Kartesz, 1999)
Epidendrum magnoliae — Flora of North America
Epilobium adenocaulon var. adenocaulon — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Epilobium coloratum — Manual of the Southeastern Flora (Small, 1933)
Eragrostis capillaris — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis cilianensis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis ciliaris — Manual of the Southeastern Flora (Small, 1933)
Eragrostis ciliaris var. ciliaris — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis curvula — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis elliottii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis hirsuta var. hirsuta — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis hirsuta var. laevivaginata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis hypnoides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis multicaulis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis pilosa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eragrostis spectabilis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erechtites hieraciifolia var. hieraciifolia — Synthesis of the North American Flora (Kartesz, 1999)
Erechtites hieraciifolius var. hieraciifolius — Flora of North America
Eremochloa ophiuroides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus brevibarbis var. contortus
Erianthus coarctatus var. coarctatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus coarctatus var. coarctatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus coarctatus var. elliottianus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus coarctatus var. elliottianus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus divaricatus — Manual of the Southeastern Flora (Small, 1933)
Erianthus giganteus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus saccharoides — Manual of the Southeastern Flora (Small, 1933)
Erianthus strictus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Erianthus strictus — Manual of the Southeastern Flora (Small, 1933)
Erigenia bulbosa — Manual of the Southeastern Flora (Small, 1933)
Erigeron canadensis — Gray's Manual of Botany (Fernald, 1950)
Erigeron pusillus — Gray's Manual of Botany (Fernald, 1950)
Erigeron strigosus var. beyrichii — PLANTS National Database
Eriochloa michauxii — Manual of the Southeastern Flora (Small, 1933)
Eriochloa michauxii var. michauxii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Eruca eruca — Manual of the Southeastern Flora (Small, 1933)
Eruca sativa — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Eryngium baldwini — Umbelliferae. North American Flora (Mathias & Constance, 1945)
Eryngium ravenelii — Manual of the Southeastern Flora (Small, 1933)
Eryngium synchaetum — Manual of the Southeastern Flora (Small, 1933)
Eryngium virginianum — Manual of the Southeastern Flora (Small, 1933)
Erythrina arborea — Manual of the Southeastern Flora (Small, 1933)
Erythrina herbacea — Manual of the Southeastern Flora (Small, 1933)
Erythronium americanum — Manual of the Southeastern Flora (Small, 1933)
Erythronium americanum — Manual of the Southeastern Flora (Small, 1933)
Eubotrys racemosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Eubotrys recurva — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Euonymus alata — Synthesis of the North American Flora (Kartesz, 1999)
Euonymus americana — Synthesis of the North American Flora (Kartesz, 1999)
Euonymus atropurpurea var. atropurpurea — Synthesis of the North American Flora (Kartesz, 1999)
Euonymus japonica — Synthesis of the North American Flora (Kartesz, 1999)
Euonymus kiautschovica — PLANTS National Database
Euonymus obovata — Synthesis of the North American Flora (Kartesz, 1999)
Eupatoriadelphus dubius — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Eupatoriadelphus fistulosus — Phylogeny & biogeography of Eupatorium (Schmidt & Schilling, 2000)
Eupatoriadelphus maculatus — Phylogeny & biogeography of Eupatorium (Schmidt & Schilling, 2000)
Eupatoriadelphus purpureus
Eupatoriadelphus purpureus
Eupatoriadelphus steelei — Phylogeny & biogeography of Eupatorium (Schmidt & Schilling, 2000)
Eupatorium album var. album — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Eupatorium album var. glandulosum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Eupatorium album var. vaseyi — Flora of North America
Eupatorium anomalum — Manual of the Southeastern Flora (Small, 1933)
Eupatorium anomalum — Manual of the Southeastern Flora (Small, 1933)
Eupatorium dubium — Synthesis of the North American Flora (Kartesz, 1999)
Eupatorium fistulosum — Synthesis of the North American Flora (Kartesz, 1999)
Eupatorium leucolepis var. leucolepis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Eupatorium maculatum var. maculatum — Synthesis of the North American Flora (Kartesz, 1999)
Eupatorium pubescens — Manual of the Southeastern Flora (Small, 1933)
Eupatorium pubescens — Manual of the Southeastern Flora (Small, 1933)
Eupatorium purpureum var. purpureum — Synthesis of the North American Flora (Kartesz, 1999)
Eupatorium purpureum var. purpureum — Synthesis of the North American Flora (Kartesz, 1999)
Eupatorium recurvans — Manual of the Southeastern Flora (Small, 1933)
Eupatorium roanensis — Manual of the Southeastern Flora (Small, 1933)
Eupatorium rotundifolium — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Eupatorium rotundifolium — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Eupatorium rotundifolium — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Eupatorium rotundifolium var. saundersii — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Eupatorium rugosum var. roanense — Gray's Manual of Botany (Fernald, 1950)
Eupatorium sessilifolium — Flora of North America
Eupatorium sessilifolium — Flora of North America
Eupatorium sessilifolium — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Eupatorium steelei — Taxonomy of Eupatorium section Verticillata (Asteraceae) (Lamont, 1995)
Eupatorium torreyanum — Manual of the Southeastern Flora (Small, 1933)
Eupatorium vaseyi — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Euphorbia arundelana — Gray's Manual of Botany (Fernald, 1950)
Euphorbia corollata var. corollata — Vascular Flora of the Carolinas
Euphorbia esula ssp. esula — World checklist of Euphorbiaceae (Govaerts, Frodin& Radcliffe-Smith, 2000)
Euphorbia lathyrus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Euphorbia maculata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Euphorbia preslii — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Euthamia graminifolia — Flora of North America
Euthamia minor — Manual of the Southeastern Flora (Small, 1933)
Euthamia tenuifolia — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Euthamia tenuifolia — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Fagopyrum sagittatum — Gray's Manual of Botany (Fernald, 1950)
Fallopia aubertii — Generic Limits in Polygonum (Ronse Decraene & Akeroyd, 1988)
Fallopia japonica — Generic Limits in Polygonum (Ronse Decraene & Akeroyd, 1988)
Fallopia sachalinensis — Flora of North America
Fallopia scandens — Generic Limits in Polygonum (Ronse Decraene & Akeroyd, 1988)
Fallopia scandens — Generic Limits in Polygonum (Ronse Decraene & Akeroyd, 1988)
Festuca arundinacea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca myuros — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca obtusa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca octoflora var. octoflora — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca ovina var. ovina — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca paradoxa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Festuca perennis — Poaceae: Festuca: Fescue, Rye Grass (Smith & Aikin, 2012)
Festuca perennis — Poaceae: Festuca: Fescue, Rye Grass (Smith & Aikin, 2012)
Festuca pratensis — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Festuca temulentum — Poaceae: Festuca: Fescue, Rye Grass (Smith & Aikin, 2012)
Festuca trachyphylla — Synthesis of the North American Flora (Kartesz, 1999)
Ficus microcarpa — Flora of North America
Filipendula rubra — Manual of the Southeastern Flora (Small, 1933)
Filipendula rubra — Flora of North America
Fimbristylis harperi — Manual of the Southeastern Flora (Small, 1933)
Fimbristylis spadicea — Manual of the Southeastern Flora (Small, 1933)
Firmiana platanifolia — Manual of the Southeastern Flora (Small, 1933)
Fissipes acaulis — Manual of the Southeastern Flora (Small, 1933)
Flaveria bidentis — Manual of the Southeastern Flora (Small, 1933)
Foeniculum foeniculum — Manual of the Southeastern Flora (Small, 1933)
Forestiera acuminata — Manual of the Southeastern Flora (Small, 1933)
Forestiera globularis — Manual of the Southeastern Flora (Small, 1933)
Forestiera ligustrina — Manual of the Southeastern Flora (Small, 1933)
Forestiera porulosa — Manual of the Southeastern Flora (Small, 1933)
Forestiera pubescens — Manual of the Southeastern Flora (Small, 1933)
Fothergilla gardeni — Manual of the Southeastern Flora (Small, 1933)
Fragaria virginiana var. virginiana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Franklinia alatamaha — Manual of the Southeastern Flora (Small, 1933)
Fraxinus americana — Manual of the Southeastern Flora (Small, 1933)
Fraxinus biltmoreana — Manual of the Southeastern Flora (Small, 1933)
Froelichia floridana — Manual of the Southeastern Flora (Small, 1933)
Froelichia floridana — Flora of North America
Froelichia floridana — Flora of North America
Froelichia gracilis — Flora of North America
Funastrum angustifolium — Clarifications, new... combinations in American Cynanchinae (Liede & Meve, 1997)
Gaillardia lanceolata var. lanceolata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gaillardia picta — Manual of the Southeastern Flora (Small, 1933)
Galactia glabella — Changes in Galactia (Fabaceae) in the Southeastern US (Duncan, 1979)
Galactia regularis — Keys to the flora of Florida, Galactia (Leguminosae) (Ward & Hall, 2004)
Galactia volubilis — Vascular Flora of the Carolinas
Galactia volubilis var. volubilis — Keys to the flora of Florida, Galactia (Leguminosae) (Ward & Hall, 2004)
Galarhoeus commutatus — Manual of the Southeastern Flora (Small, 1933)
Galarhoeus cyparissias — Manual of the Southeastern Flora (Small, 1933)
Galax aphylla — Manual of the Southeastern Flora (Small, 1933)
Galeorchis spectabilis — Manual of the Southeastern Flora (Small, 1933)
Galium claytonii — Manual of the Southeastern Flora (Small, 1933)
Galium mollugo — Synthesis of the North American Flora (Kartesz, 1999)
Galium mollugo var. erectum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Galium mollugo var. mollugo — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gamochaeta argyrinea — Flora of North America
Garciana cochinchinensis
Gaura angustifolia — Manual of the Southeastern Flora (Small, 1933)
Gaylussacia dumosa var. dumosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gentiana clausa — Synthesis of the North American Flora (Kartesz, 1999)
Gentiana flavida — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Geobalanus oblongifolius — Manual of the Southeastern Flora (Small, 1933)
Geobalanus pallidus — Manual of the Southeastern Flora (Small, 1933)
Gerardia aphylla — Scrophulariaceae of eastern temperate North America (F.W. Pennell, 1935)
Gerardia fasciculata — Gray's Manual of Botany (Fernald, 1950)
Gerardia flava + — Gray's Manual of Botany (Fernald, 1950)
Gerardia laevigata — Gray's Manual of Botany (Fernald, 1950)
Gerardia linifolia — Gray's Manual of Botany (Fernald, 1950)
Gerardia obtusifolia — Gray's Manual of Botany (Fernald, 1950)
Gerardia patula
Gerardia pectinata — Gray's Manual of Botany (Fernald, 1950)
Gerardia pedicularia + — Gray's Manual of Botany (Fernald, 1950)
Gerardia purpurea — Gray's Manual of Botany (Fernald, 1950)
Gerardia racemulosa — Gray's Manual of Botany (Fernald, 1950)
Gerardia setacea — Gray's Manual of Botany (Fernald, 1950)
Gerardia tenuifolia var. tenuifolia — Gray's Manual of Botany (Fernald, 1950)
Gerardia virginica — Gray's Manual of Botany (Fernald, 1950)
Geum hirsutum — Manual of the Southeastern Flora (Small, 1933)
Geum virginianum — Manual of the Southeastern Flora (Small, 1933)
Gilia rubra — Manual of the Southeastern Flora (Small, 1933)
Gladiolus dalenii ssp. dalenii — Flora of North America
Glandularia tenuisecta — Manual of the Southeastern Flora (Small, 1933)
Glottidium vesicarium — Synthesis of the North American Flora (Kartesz, 1999)
Glyceria septentrionalis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Glyceria striata var. striata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Glycine apios — Manual of the Southeastern Flora (Small, 1933)
Gnaphalium calviceps — Gray's Manual of Botany (Fernald, 1950)
Gnaphalium calviceps — Gray's Manual of Botany (Fernald, 1950)
Gnaphalium margaritaceum — Linnaeus
Gnaphalium purpureum Linnaeus var. purpureum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gnaphalium spathulatum — Manual of the Southeastern Flora (Small, 1933)
Gonolobus carolinensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gonolobus decipiens — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gonolobus gonocarpos — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gonolobus laevis — Manual of the Southeastern Flora (Small, 1933)
Gonolobus obliquus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Gordonia alatamaha
Gossypium herbaceum — Manual of the Southeastern Flora (Small, 1933)
Gossypium hirsutum — Manual of the Southeastern Flora (Small, 1933)
Gratiola neglecta — Manual of the Southeastern Flora (Small, 1933)
Grossularia curvata — Manual of the Southeastern Flora (Small, 1933)
Grossularia cynosbati — Manual of the Southeastern Flora (Small, 1933)
Grossularia echinella — Manual of the Southeastern Flora (Small, 1933)
Grossularia rotundifolia — Manual of the Southeastern Flora (Small, 1933)
Guilandina bonduc — Manual of the Southeastern Flora (Small, 1933)
Guilandina crista — Manual of the Southeastern Flora (Small, 1933)
Gymnadeniopsis clavellata — Manual of the Southeastern Flora (Small, 1933)
Gymnadeniopsis integra — Manual of the Southeastern Flora (Small, 1933)
Gymnadeniopsis nivea — Manual of the Southeastern Flora (Small, 1933)
Gymnopogon ambiguus — Manual of the Southeastern Flora (Small, 1933)
Gyrotheca tinctoria — Manual of the Southeastern Flora (Small, 1933)
Habenaria blephariglottis var. conspicua — Gray's Manual of Botany (Fernald, 1950)
Habenaria fimbriata — Gray's Manual of Botany (Fernald, 1950)
Habenaria quinqueseta — Manual of the Southeastern Flora (Small, 1933)
Habenaria quinqueseta — Flora of North America
Habenaria repens — Manual of the Southeastern Flora (Small, 1933)
Habenaria repens — Flora of North America
Halesia carolina — Manual of the Southeastern Flora (Small, 1933)
Halesia carolina — Flora of North America
Halesia diptera — Flora of North America
Halesia monticola — Manual of the Southeastern Flora (Small, 1933)
Hartmannia speciosa — Manual of the Southeastern Flora (Small, 1933)
Hedeoma hispidum
Hedera helix ssp. helix — World checklist and bibliography of Araliaceae (Frodin & Govaerts, 2003)
Hedera helix ssp. hibernica — World checklist and bibliography of Araliaceae (Frodin & Govaerts, 2003)
Hedera helix var. helix — The genera of Araliaceae in the southeastern United States (Graham, 1966)
Hedera helix var. hibernica — The genera of Araliaceae in the southeastern United States (Graham, 1966)
Hedyotis australis — The Genera of Cinchonoideae (Rubiaceae) in the southeastern US (Rogers, 1987)
Hedyotis caerulea — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Hedyotis canadensis — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis corymbosa — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Hedyotis crassifolia — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis longifolia — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis longifolia — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis longifolia — The Genera of Cinchonoideae (Rubiaceae) in the southeastern US (Rogers, 1987)
Hedyotis michauxii — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis nigricans var. nigricans — Synthesis of the North American Flora (Kartesz, 1999)
Hedyotis nuttalliana — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis procumbens — The Genera of Cinchonoideae (Rubiaceae) in the southeastern US (Rogers, 1987)
Hedyotis purpurea — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis purpurea var. calycosa
Hedyotis purpurea var. montana
Helenium autumnale var. parviflorum — PLANTS National Database
Helenium helenium — Manual of the Southeastern Flora (Small, 1933)
Helenium tenuifolium — Manual of the Southeastern Flora (Small, 1933)
Helianthus agrestis — Manual of the Southeastern Flora (Small, 1933)
Helianthus cucumerifolius — Manual of the Southeastern Flora (Small, 1933)
Helianthus dowellianus — Flora of West Virginia (Strausbaugh & Core, 1978)
Helianthus laetiflorus var. laetiflorus — Gray's Manual of Botany (Fernald, 1950)
Helianthus laetiflorus var. rigidus — Gray's Manual of Botany (Fernald, 1950)
Helianthus microcephalus — Gray's Manual of Botany (Fernald, 1950)
Helianthus occidentalis var. dowellianus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Helianthus radula — Manual of the Southeastern Flora (Small, 1933)
Helianthus rigidus — Manual of the Southeastern Flora (Small, 1933)
Heliotropium curassavicum — Manual of the Southeastern Flora (Small, 1933)
Heliotropium curassavicum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Helleborus viridis — Manual of the Southeastern Flora (Small, 1933)
Hepatica acuta — Manual of the Southeastern Flora (Small, 1933)
Hepatica hepatica — Manual of the Southeastern Flora (Small, 1933)
Heracleum sphondylium ssp. montanum
Heracleum sphondylium var. lanatum
Herpothamnus crassifolius — Manual of the Southeastern Flora (Small, 1933)
Heteranthera reniformis — Manual of the Southeastern Flora (Small, 1933)
Heterotheca aspera
Heterotheca correllii — Vascular Flora of the Carolinas
Heterotheca graminifolia — Vascular Flora of the Carolinas
Heterotheca hyssopifolia var. subulata
Heterotheca oligantha
Heterotheca pilosa — A preliminary conspectus of Heterotheca section Chrysopsis (Harms, 1974)
Heterotheca ruthii
Heterotheca subaxillaris ssp. latifolia — Flora of North America
Heterotheca subaxillaris ssp. subaxillaris — Flora of North America
Heterotheca subulata
Hexastylis callifolia — Manual of the Southeastern Flora (Small, 1933)
Hexastylis memmingeri — Manual of the Southeastern Flora (Small, 1933)
Hexastylis ruthii — Manual of the Southeastern Flora (Small, 1933)
Hexastylis shuttleworthii — Manual of the Southeastern Flora (Small, 1933)
Hibiscus ...
Hibiscus ...
Hibiscus drummondii
Hibiscus esculentus — Gray's Manual of Botany (Fernald, 1950)
Hibiscus lasiocarpus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Hibiscus moscheutos ssp. lasiocarpos — Synthesis of the North American Flora (Kartesz, 1999)
Hibiscus moscheutos ssp. moscheutos — Synthesis of the North American Flora (Kartesz, 1999)
Hibiscus palustris — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Hibiscus pentacarpos
Hicora texana — Manual of the Southeastern Flora (Small, 1933)
Hicoria alba — Manual of the Southeastern Flora (Small, 1933)
Hicoria aquatica — Manual of the Southeastern Flora (Small, 1933)
Hicoria carolinae-septentrionalis — Manual of the Southeastern Flora (Small, 1933)
Hicoria cordiformis — Manual of the Southeastern Flora (Small, 1933)
Hicoria floridana — Manual of the Southeastern Flora (Small, 1933)
Hicoria glabra var. glabra — Manual of the Southeastern Flora (Small, 1933)
Hicoria laciniosa — Manual of the Southeastern Flora (Small, 1933)
Hicoria microcarpa — Manual of the Southeastern Flora (Small, 1933)
Hicoria myristiciformis — Manual of the Southeastern Flora (Small, 1933)
Hicoria ovata — Manual of the Southeastern Flora (Small, 1933)
Hicoria pallida — Manual of the Southeastern Flora (Small, 1933)
Hicoria pecan — Manual of the Southeastern Flora (Small, 1933)
Hieracium praealtum var. decipiens — Synthesis of the North American Flora (Kartesz, 1999)
Hieracium venosum + — Synthesis of the North American Flora (Kartesz, 1999)
Hippochaete hyemalis ssp. affinis
Holcus halepensis — Manual of the Southeastern Flora (Small, 1933)
Holcus lanatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Holcus sorghum — Manual of the Southeastern Flora (Small, 1933)
Holubiella lunarioides
Homalocenchrus lenticularis — Manual of the Southeastern Flora (Small, 1933)
Homalocenchrus oryzoides — Manual of the Southeastern Flora (Small, 1933)
Homalocenchrus virginicus — Manual of the Southeastern Flora (Small, 1933)
Homalosorus pycnocarpos — Manual of the Southeastern Flora (Small, 1933)
Houstonia lanceolata — Manual of the Southeastern Flora (Small, 1933)
Houstonia minima — Manual of the Southeastern Flora (Small, 1933)
Houstonia pusilla — Manual of the Southeastern Flora (Small, 1933)
Hudsonia ericoides ssp. ericoides — Variation and speciation in the genus Hudsonia (Skog & Nickerson, 1972)
Hudsonia ericoides ssp. montana — Variation and speciation in the genus Hudsonia (Skog & Nickerson, 1972)
Hugeria erythrocarpa — Manual of the Southeastern Flora (Small, 1933)
Hydatica petiolaris — Manual of the Southeastern Flora (Small, 1933)
Hydatica petiolaris — Manual of the Southeastern Flora (Small, 1933)
Hydrangea arborescens var. discolor — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Hydrangea species 1
Hydrocotyle canbyi — Manual of the Southeastern Flora (Small, 1933)
Hydrophyllum canadense — Manual of the Southeastern Flora (Small, 1933)
Hydrophyllum macrophyllum — Manual of the Southeastern Flora (Small, 1933)
Hydrophyllum virginicum — Manual of the Southeastern Flora (Small, 1933)
Hymenocallis caroliniana — Synthesis of the North American Flora (Kartesz, 1999)
Hymenocallis caroliniana — Synthesis of the North American Flora (Kartesz, 1999)
Hymenocallis occidentalis — Manual of the Southeastern Flora (Small, 1933)
Hymenocallis occidentalis — Manual of the Southeastern Flora (Small, 1933)
Hypericum apocynifolium — Manual of the Southeastern Flora (Small, 1933)
Hypericum aureum — Manual of the Southeastern Flora (Small, 1933)
Hypericum denticulatum var. recognitum — Vascular Flora of the Carolinas
Hypericum interior — Manual of the Southeastern Flora (Small, 1933)
Hypericum sphaerocarpum var. turgidum
Hypericum splendens — Manual of the Southeastern Flora (Small, 1933)
Hypericum tubulosum var. tubulosum — Gray's Manual of Botany (Fernald, 1950)
Hypericum tubulosum var. walteri — Gray's Manual of Botany (Fernald, 1950)
Hypericum turgidum — Manual of the Southeastern Flora (Small, 1933)
Hypolepis repens — Manual of the Southeastern Flora (Small, 1933)
Hypolepis repens — Flora of North America
Hypolepis tenuifolia — Flora of China
Hypoxis juncea — Manual of the Southeastern Flora (Small, 1933)
Hyptis mutabilis — Manual of the Southeastern Flora (Small, 1933)
Hyptis radiata — Manual of the Southeastern Flora (Small, 1933)
Ibidium beckii — Manual of the Southeastern Flora (Small, 1933)
Ibidium cernuum — Manual of the Southeastern Flora (Small, 1933)
Ibidium floridanum — Manual of the Southeastern Flora (Small, 1933)
Ibidium gracile — Manual of the Southeastern Flora (Small, 1933)
Ibidium laciniatum — Manual of the Southeastern Flora (Small, 1933)
Ibidium longilabre — Manual of the Southeastern Flora (Small, 1933)
Ibidium ochroleucum — Manual of the Southeastern Flora (Small, 1933)
Ibidium odoratum — Manual of the Southeastern Flora (Small, 1933)
Ibidium ovale — Manual of the Southeastern Flora (Small, 1933)
Ibidium ovale — Manual of the Southeastern Flora (Small, 1933)
Ibidium plantagineum — Manual of the Southeastern Flora (Small, 1933)
Ibidium praecox — Manual of the Southeastern Flora (Small, 1933)
Ibidium praecox — Manual of the Southeastern Flora (Small, 1933)
Ibidium vernale — Manual of the Southeastern Flora (Small, 1933)
Ilex ambigua var. monticola — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Ilex beadlei — Manual of the Southeastern Flora (Small, 1933)
Ilex longipes var. cuthbertii — Systematic study of Ilex ambigua, Ilex decidua and related taxa (Krakow, 1989)
Ilex monticola — Manual of the Southeastern Flora (Small, 1933)
Impatiens biflora — Manual of the Southeastern Flora (Small, 1933)
Imperata brasiliensis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Imperata cylindrica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)

Ionoxalis violacea — Manual of the Southeastern Flora (Small, 1933)
Ipomoea coccinea var. hederifolia
Ipomoea pes-caprae — Manual of the Southeastern Flora (Small, 1933)
Iris flavescens — Synthesis of the North American Flora (Kartesz, 1999)
Iris foliosa — Manual of the Southeastern Flora (Small, 1933)
Iris mississippiensis — Manual of the Southeastern Flora (Small, 1933)
Iris savannarum — Manual of the Southeastern Flora (Small, 1933)
Isanthus brachiatus — Synthesis of the North American Flora (Kartesz, 1999)
Isnardia palustris — Manual of the Southeastern Flora (Small, 1933)
Isnardia repens — Manual of the Southeastern Flora (Small, 1933)
Isoetes engelmannii — Flora of North America
Isoetes engelmannii — Flora of North America
Isoetes engelmannii var. engelmannii — Manual of the Southeastern Flora (Small, 1933)
Isoetes engelmannii var. engelmannii — Manual of the Southeastern Flora (Small, 1933)
Isoetes melanopoda — Flora of North America
Isoetes melanospora — Flora of North America
Isoetes virginica — Flora of North America
Isoetes virginica — Flora of North America
Isopappus divaricatus — Manual of the Southeastern Flora (Small, 1933)
Isotrema macrophylla — Tennessee Flora Committee (2015)
Isotrema tomentosa — Tennessee Flora Committee (2015)
Itea virginica — Manual of the Southeastern Flora (Small, 1933)
Itea virginica — Flora of North America
Juncoides carolinae — Manual of the Southeastern Flora (Small, 1933)
Juncoides saltuense — Manual of the Southeastern Flora (Small, 1933)
Juncus megacephalus — Manual of the Southeastern Flora (Small, 1933)
Juncus trigonocarpus — Manual of the Southeastern Flora (Small, 1933)
Jussiaea decurrens — Manual of the Southeastern Flora (Small, 1933)
Justicia crassifolia — Manual of the Southeastern Flora (Small, 1933)
Justicia crassifolia — Manual of the Southeastern Flora (Small, 1933)
Justicia ovata var. angusta — The Genera of Acanthaceae in the Southeastern US (Long, 1970)
Kali tragus ssp. ponticum
Kallstroemia maxima — Manual of the Southeastern Flora (Small, 1933)
Kalmia angustifolia var. angustifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Kalmia angustifolia var. carolina — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Koellia albescens — Manual of the Southeastern Flora (Small, 1933)
Koellia aristata — Manual of the Southeastern Flora (Small, 1933)
Koellia hyssopifolia — Manual of the Southeastern Flora (Small, 1933)
Koellia montana — Manual of the Southeastern Flora (Small, 1933)
Koellia mutica — Manual of the Southeastern Flora (Small, 1933)
Koellia virginiana — Manual of the Southeastern Flora (Small, 1933)
Kosteletzkya pentacarpos — Innovations in Hibiscus & Kosteletzkya (Malvaceae, Hibisceae) (Blanchard, 2008)
Kraunhia frutescens — Manual of the Southeastern Flora (Small, 1933)
Kraunhia macrostachya — Manual of the Southeastern Flora (Small, 1933)
Krigia cespitosa var. cespitosa — Flora of North America
Kuhnia eupatorioides — Manual of the Southeastern Flora (Small, 1933)
Kyllinga pumila — Manual of the Southeastern Flora (Small, 1933)
Kyllinga squamulata — Flora of North America
Kyllinga squamulata — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Lachnocaulon beyrichianum — Manual of the Southeastern Flora (Small, 1933)
Lacinaria spicata — Manual of the Southeastern Flora (Small, 1933)
Laciniaria chapmanii
Laciniaria chlorolepis — Manual of the Southeastern Flora (Small, 1933)
Laciniaria garberi — Manual of the Southeastern Flora (Small, 1933)
Lactuca floridana var. villosa — PLANTS National Database
Lactuca serriola var. integrata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Lantana depressa — Manual of the Southeastern Flora (Small, 1933)
Lantana ovatifolia — Manual of the Southeastern Flora (Small, 1933)
Lapithea capitata — Manual of the Southeastern Flora (Small, 1933)
Laportea canadensis — Manual of the Southeastern Flora (Small, 1933)
Lappula virginiana — Manual of the Southeastern Flora (Small, 1933)
Lasiococcus dumosus — Manual of the Southeastern Flora (Small, 1933)
Lasiococcus mosieri — Manual of the Southeastern Flora (Small, 1933)
Lavauxia triloba — Manual of the Southeastern Flora (Small, 1933)
Lechea deckertii — Manual of the Southeastern Flora (Small, 1933)
Lechea racemulosa — Manual of the Southeastern Flora (Small, 1933)
Lecticula resupinata — Manual of the Southeastern Flora (Small, 1933)
Leersia lenticularis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Leersia oryzoides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Leersia virginica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Leiophyllum buxifolium var. prostratum — Vascular Flora of the Carolinas
Leontodon erythrospermum — Manual of the Southeastern Flora (Small, 1933)
Leontodon taraxacum — Manual of the Southeastern Flora (Small, 1933)
Lepidium didymum — Flora of North America
Leptamnium virginianum — Manual of the Southeastern Flora (Small, 1933)
Leptilon canadense — Manual of the Southeastern Flora (Small, 1933)
Leptochloa dubia — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Leptochloa filiformis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Leptochloa filiformis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Leptoglottis floridana — Manual of the Southeastern Flora (Small, 1933)
Lespedeza angustifolia — Gray's Manual of Botany (Fernald, 1950)
Lespedeza hirta ar. intercursa — Gray's Manual of Botany (Fernald, 1950)
Lespedeza stuvei — Manual of the Southeastern Flora (Small, 1933)
Leucanthemum leucanthemum — Manual of the Southeastern Flora (Small, 1933)
Leucothoe acuminata — Manual of the Southeastern Flora (Small, 1933)
Leucothoe catesbaei — Manual of the Southeastern Flora (Small, 1933)
Leucothoe editorum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Leucothoe racemosa — Synthesis of the North American Flora (Kartesz, 1999)
Leucothoe recurva — Synthesis of the North American Flora (Kartesz, 1999)
Liatris elegans var. flabellata — PLANTS National Database
Liatris graminifolia var. virgata — Gray's Manual of Botany (Fernald, 1950)
Liatris spheroidea — Synthesis of the North American Flora (Kartesz, 1999)
Liatris turgida — Vascular Flora of the Carolinas (1968)
Liatris turgida — PLANTS National Database
Ligustrum obtusifolium — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ligustrum obtusifolium var. amurense
Lilaeopsis attenuata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Lilaeopsis lineata — Manual of the Southeastern Flora (Small, 1933)
Lilium canadense ssp. michiganense
Lilium carolinianum — Manual of the Southeastern Flora (Small, 1933)
Lilium catesbaei — Manual of the Southeastern Flora (Small, 1933)
Lilium superbum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Lilium tigrinum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Limnobium spongia — Manual of the Southeastern Flora (Small, 1933)
Limonium nashii + — Vascular Flora of the Carolinas
Linaria canadensis var. canadensis — Manual of the Southeastern Flora (Small, 1933)
Linaria canadensis var. texana — Manual of the Southeastern Flora (Small, 1933)
Linaria linaria — Manual of the Southeastern Flora (Small, 1933)
Lindera benzoin — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Lindera benzoin var. pubescens — PLANTS National Database
Lindernia anagallidea — Vascular Flora of the Carolinas (1968)
Lindernia dubia var. anagallidea — PLANTS National Database
Lindernia saxicola — Vascular Flora of the Carolinas (1968)
Liriope graminifolia — Flora of China
Liriope graminifolia — Liriope & Ophiopogon naturalized & commonly cultivated in the USA (Nesom, 2010)
Liriope muscari — Flora of China
Liriope muscari — Liriope & Ophiopogon naturalized & commonly cultivated in the USA (Nesom, 2010)
Liriope spicata — Liriope & Ophiopogon naturalized & commonly cultivated in the USA (Nesom, 2010)
Liriope spicatum — Floristic synthesis of North America (Kartesz 2010). Biota of N. America (BONAP)
Litsea aestivalis — Flora of North America
Lobelia batsonii — Pittman (in prep)
Lobelia glandulosa — Manual of the Southeastern Flora (Small, 1933)
Lolium arundinaceum — Synthesis of the North American Flora (Kartesz, 1999)
Lolium multiflorum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Lolium perenne — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Lolium pratense — Synthesis of the North American Flora (Kartesz, 1999)
Lolium temulentum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Lonicera bella — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Lonicera sempervirens var. hirsutula — Synthesis of the North American Flora (Kartesz, 1999)
Lonicera sempervirens var. sempervirens — Synthesis of the North American Flora (Kartesz, 1999)
Lorinseria areolata — Manual of the Southeastern Flora (Small, 1933)
Lotus corniculatus — Native & naturalized Leguminosae (Fabaceae) of the US (Isely, 1998)
Lotus corniculatus — Native & naturalized Leguminosae (Fabaceae) of the US (Isely, 1998)
Ludwigia grandiflora — Separation of 2 species within Ludwigia uruguayensis (Zardini, Gu, Raven, 1991)
Ludwigia hexapetala — Separation of 2 species within Ludwigia uruguayensis (Zardini, Gu, Raven, 1991)
Ludwigia maritima — Manual of the Southeastern Flora (Small, 1933)
Ludwigia natans — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ludwigia uruguayensis — Synthesis of the North American Flora (Kartesz, 1999)
Ludwigia uruguayensis — Synthesis of the North American Flora (Kartesz, 1999)
Ludwigiantha arcuata — Manual of the Southeastern Flora (Small, 1933)
Lupinus diffusus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Lupinus perennis — Manual of the Southeastern Flora (Small, 1933)
Lupinus perennis ssp. perennis var. occidentalis — PLANTS National Database
Lupinus villosus — Manual of the Southeastern Flora (Small, 1933)
Luzula acuminata var. acuminata — Synthesis of the North American Flora (Kartesz, 1999)
Luzula acuminata var. carolinae — Synthesis of the North American Flora (Kartesz, 1999)
Lycium carolinianum var. quadrifidum — PLANTS National Database:
Lycopodium annotinum — Flora of North America
Lycopodium cernuum — Manual of the Southeastern Flora (Small, 1933)
Lycopodium obscurum var. isophyllum — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Lycopodium prostratum — Manual of the Southeastern Flora (Small, 1933)
Lycopodium selago var. appressum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Lycopus rubellus — Manual of the Southeastern Flora (Small, 1933)
Lycopus velutinus — Manual of the Southeastern Flora (Small, 1933)
Lycopus virginicus — Manual of the Southeastern Flora (Small, 1933)
Lygodesmia aphylla — Manual of the Southeastern Flora (Small, 1933)
Lyonia palustris — Manual of the Southeastern Flora (Small, 1933)
Lysias orbiculata — Manual of the Southeastern Flora (Small, 1933)
Maclura tricuspidata — Flora of China
Magnolia acuminata var. acuminata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Magnolia cordata — Andre Michaux
Magnolia fraseri var. pyramidata — Magnoliaceae hardy in cooler temperatures (Spongberg, 1998)
Magnolia macrophylla var. ashei — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Malaxis bayardii — Flora of North America
Malaxis spicata — Manual of the Southeastern Flora (Small, 1933)
Malaxis spicata — Flora of North America
Malaxis unifolia — Manual of the Southeastern Flora (Small, 1933)
Malaxis unifolia — Manual of the Southeastern Flora (Small, 1933)
Malaxis unifolia — Flora of North America
Malus angustifolia var. puberula — Synthesis of the North American Flora (Kartesz, 1999)
Malus sylvestris
Malvaviscus arboreus var. mexicanus
Malvaviscus arboreus var. penduliflorus
Malvaviscus drummondii — Manual of the Southeastern Flora (Small, 1933)
Manisuris exaltata — Manual of the Southeastern Flora (Small, 1933)
Manisuris rugosa — Manual of the Southeastern Flora (Small, 1933)
Mappia origanoides — Manual of the Southeastern Flora (Small, 1933)
Marginaria polypodioides — Manual of the Southeastern Flora (Small, 1933)
Mariana mariana — Manual of the Southeastern Flora (Small, 1933)
Marilaunidium jamaicense — Manual of the Southeastern Flora (Small, 1933)
Mariscus jamaicensis — Manual of the Southeastern Flora (Small, 1933)
Marshallia graminifolia — Manual of the Southeastern Flora (Small, 1933)
Marshallia graminifolia ssp. tenuifolia — Biosystematic & phenetic analysis of Marshallia (Watson & Estes, 1990)
Marshallia ramosa — Manual of the Southeastern Flora (Small, 1933)
Marsilea minuta — Flora of North America
Marsilea mutica — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Matelea suberosa — Vascular Flora of the Carolinas
Matricaria parthenium — Manual of the Southeastern Flora (Small, 1933)
Matricaria perforata
Mayaca aubletii — Vascular Flora of the Carolinas (1968)
Mazus reptans
Medeola virginiana — Manual of the Southeastern Flora (Small, 1933)
Meibomia acuminata — Manual of the Southeastern Flora (Small, 1933)
Meibomia arenicola — Manual of the Southeastern Flora (Small, 1933)
Meibomia canescens — Manual of the Southeastern Flora (Small, 1933)
Meibomia canescens — Manual of the Southeastern Flora (Small, 1933)
Meibomia chapmanii — Manual of the Southeastern Flora (Small, 1933)
Meibomia grandiflora — Manual of the Southeastern Flora (Small, 1933)
Meibomia laevigata — Manual of the Southeastern Flora (Small, 1933)
Meibomia marilandica — Manual of the Southeastern Flora (Small, 1933)
Meibomia michauxii — Manual of the Southeastern Flora (Small, 1933)
Meibomia nudiflora — Manual of the Southeastern Flora (Small, 1933)
Meibomia paniculata — Manual of the Southeastern Flora (Small, 1933)
Meibomia pauciflora — Manual of the Southeastern Flora (Small, 1933)
Meibomia polymorpha — Manual of the Southeastern Flora (Small, 1933)
Meibomia purpurea — Manual of the Southeastern Flora (Small, 1933)
Meibomia rhombifolia — Manual of the Southeastern Flora (Small, 1933)
Meibomia rhombifolia — Manual of the Southeastern Flora (Small, 1933)
Meibomia rigida — Manual of the Southeastern Flora (Small, 1933)
Meibomia sessilifolia
Meibomia stricta — Manual of the Southeastern Flora (Small, 1933)
Meibomia tenuifolia — Manual of the Southeastern Flora (Small, 1933)
Meibomia viridiflora — Manual of the Southeastern Flora (Small, 1933)
Meibomia viridiflora — Manual of the Southeastern Flora (Small, 1933)
Melanthera hastata — Manual of the Southeastern Flora (Small, 1933)
Melanthium latifolium — Synthesis of the North American Flora (Kartesz, 1999)
Melanthium parviflorum — Synthesis of the North American Flora (Kartesz, 1999)
Melanthium virginicum — Synthesis of the North American Flora (Kartesz, 1999)
Melanthium woodii — Synthesis of the North American Flora (Kartesz, 1999)
Melica mutica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Melica mutica — Flora of North America
Melochia villosa — The genera of Sterculiaceae in the Southeastern US (Brizicky, 1966)
Melothria pendula var. aspera — PLANTS National Database
Melothria pendula var. crassifolia — PLANTS National Database
Mentha arvensis var. canadensis — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Mentha canadensis — Manual of the Southeastern Flora (Small, 1933)
Mentha piperita — Manual of the Southeastern Flora (Small, 1933)
Mentha spicata — Manual of the Southeastern Flora (Small, 1933)
Mentha Xpiperita var. piperita — Floristic synthesis of North America (Kartesz 2010). Biota of N. America (BONAP)
Mesadenia atriplicifolia — Manual of the Southeastern Flora (Small, 1933)
Mesadenia reniformis — Manual of the Southeastern Flora (Small, 1933)
Micrampelis lobata — Manual of the Southeastern Flora (Small, 1933)
Micranthes careyana — Manual of the Southeastern Flora (Small, 1933)
Micranthes caroliniana — Manual of the Southeastern Flora (Small, 1933)
Micranthes micranthidifolia — Manual of the Southeastern Flora (Small, 1933)
Micranthes petiolaris — Flora of North America
Micranthes petiolaris — Flora of North America
Micranthes virginiensis — Manual of the Southeastern Flora (Small, 1933)
Microstegium vimineum var. imberbe — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Microstegium vimineum var. vimineum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Mimosa illinoensis — Andre Michaux
Mimosa quadrivalvis var. angustata — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Minuartia alabamensis
Miscanthus sinensis var. variegatus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Miscanthus sinensis var. zebrinus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Monarda fistulosa var. clinopodia
Monogynella japonica
Muhlenbergia capillaris var. capillaris — Synthesis of the North American Flora (Kartesz, 1999)
Muhlenbergia capillaris var. capillaris — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Muhlenbergia capillaris var. filipes — Synthesis of the North American Flora (Kartesz, 1999)
Muhlenbergia capillaris var. filipes — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Muhlenbergia capillaris var. trichopodes — Synthesis of the North American Flora (Kartesz, 1999)
Muhlenbergia expansa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Muhlenbergia mexicana — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Muhlenbergia schreberi — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Muhlenbergia sylvatica var. sylvatica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Muhlenbergia umbrosa — Manual of the Southeastern Flora (Small, 1933)
Muricauda dracontium — Manual of the Southeastern Flora (Small, 1933)
Muscadinia munsoniana — Manual of the Southeastern Flora (Small, 1933)
Muscadinia rotundifolia — Manual of the Southeastern Flora (Small, 1933)
Muscari atlanticum — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Myosotis micrantha — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Myosotis versicolor — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Myrica cerifera — Flora of North America
Myrica cerifera — Flora of North America
Myrica gale — Manual of the Southeastern Flora (Small, 1933)
Myrica gale — Flora of North America
Myrica heterophylla — Flora of North America
Myrica inodora — Flora of North America
Myrica pensylvanica — Flora of North America
Myriophyllum exalbescens — Gray's Manual of Botany (Fernald, 1950)
Myriophyllum heterophyllum — Manual of the Southeastern Flora (Small, 1933)
Myriophyllum laxum
Nabalus albus — Manual of the Southeastern Flora (Small, 1933)
Nabalus altissimus — Manual of the Southeastern Flora (Small, 1933)
Nabalus integrifolius — Manual of the Southeastern Flora (Small, 1933)
Nabalus roanensis — Manual of the Southeastern Flora (Small, 1933)
Nabalus serpentarius — Manual of the Southeastern Flora (Small, 1933)
Nabalus trifoliatus — Manual of the Southeastern Flora (Small, 1933)
Nabalus virgatus — Manual of the Southeastern Flora (Small, 1933)
Naias guadelupensis
Nama corymbosum — Manual of the Southeastern Flora (Small, 1933)
Nama quadrivalvis — Manual of the Southeastern Flora (Small, 1933)
Nekemias arborea — Synopsis of Nekemias, segregate from Ampelopsis (Wen, Boggan & Nie, 2014)
Nelumbo lutea — Manual of the Southeastern Flora (Small, 1933)
Nelumbo nucifera — Flora of North America
Nemexia biltmoreana — Manual of the Southeastern Flora (Small, 1933)
Nemexia ecirrhata — Manual of the Southeastern Flora (Small, 1933)
Nemophila microcalyx — Manual of the Southeastern Flora (Small, 1933)
Neocleome spinosa — Manual of the Southeastern Flora (Small, 1933)
Neopieris mariana — Manual of the Southeastern Flora (Small, 1933)
Neopieris nitida
Neottia bifolia
Neottia smallii
Nephrolepis cordifolia — Manual of the Southeastern Flora (Small, 1933)
Nestronia umbellula — Manual of the Southeastern Flora (Small, 1933)
Neviusia alabamensis — Manual of the Southeastern Flora (Small, 1933)
Notholcus lanatus — Manual of the Southeastern Flora (Small, 1933)
Nuphar advena ssp. advena — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Nymphaea advena — Manual of the Southeastern Flora (Small, 1933)
Nymphaea sagittifolia — Manual of the Southeastern Flora (Small, 1933)
Nymphoides aquaticum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Nymphoides cordatum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Nymphoides peltatum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Nyssa biflora var. ursina — Keys to the flora of Florida, Nyssa (Nyssaceae) (Ward, 2008)
Nyssa sylvatica var. ursina — Phylogeny and biogeography of Nyssa (Cornaceae) (Wen & Stuessy, 1993)
Nyssa uniflora — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Oceanorus leimanthoides — Manual of the Southeastern Flora (Small, 1933)
Odontostephana shortii — Manual of the Southeastern Flora (Small, 1933)
Oenothera fruticosa ssp. fruticosa — Synthesis of the North American Flora (Kartesz, 1999)
Oenothera tetragona ssp. glauca var. riparia — Onagraceae (Munz, 1965)
Oldenlandia corymbosa — Manual of the Southeastern Flora (Small, 1933)
Onosmodium molle ssp. occidentale — Synthesis of the North American Flora (Kartesz, 1999)
Onosmodium occidentale — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ophioglossum crotalophoroides var. nanum — PLANTS National Database
Ophiopogon japonicus — Flora of China
Ophiopogon japonicus — Liriope & Ophiopogon naturalized & commonly cultivated in the USA (Nesom, 2010)
Ophrys australis — Manual of the Southeastern Flora (Small, 1933)
Ophrys smallii — Manual of the Southeastern Flora (Small, 1933)
Oplismenus setarius — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Opulaster opulifolius — Manual of the Southeastern Flora (Small, 1933)
Opuntia stricta — Flora of North America
Opuntia stricta — Flora of North America
Opuntia stricta var. dillenii — Synthesis of the North American Flora (Kartesz, 1999)
Opuntia stricta var. stricta — Synthesis of the North American Flora (Kartesz, 1999)
Orthodon dianthera — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Osmorrhiza claytonii — Manual of the Southeastern Flora (Small, 1933)
Osmorrhiza longistylis — Manual of the Southeastern Flora (Small, 1933)
Osmunda cinnamomea var. glandulosa — PLANTS National Database
Osmunda regalis — Manual of the Southeastern Flora (Small, 1933)
Oxalis acetosella ssp. montana — Oxalidaceae in the southeastern United States (Robertson, 1975)
Oxalis articulata ssp. rubra
Oxalis colorea — Flora of North America
Oxalis europaea — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Oxalis florida var. florida — Vascular Flora of the Carolinas (1968)
Oxalis macrantha — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Oxalis montana — Manual of the Southeastern Flora (Small, 1933)
Oxalis recurva var. macrantha — Gray's Manual of Botany (Fernald, 1950)
Oxalis recurva var. recurva — Gray's Manual of Botany (Fernald, 1950)
Oxalis repens — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Oxalis stricta — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Oxybaphus nyctagineus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Oxycoccus macrocarpus — Manual of the Southeastern Flora (Small, 1933)
Oxycoccus ovalifolius
Oxycoccus palustris
Oxypolis denticulata — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Oxypolis ternata — Manual of the Southeastern Flora (Small, 1933)
Oxytria albiflora — Manual of the Southeastern Flora (Small, 1933)
Oxytria crocea — Manual of the Southeastern Flora (Small, 1933)
Oxytria texana — Manual of the Southeastern Flora (Small, 1933)
Packera millefolia — Synthesis of the North American Flora (Kartesz, 1999)
Packera paupercula — Flora of North America
Packera paupercula var. appalachiana
Packera schweinitzianus — Segregates of Senecio & Cacalia in the flora of North America... (Barkley, 1999)
Panicularia septentrionalis — Manual of the Southeastern Flora (Small, 1933)
Panicularia striata — Manual of the Southeastern Flora (Small, 1933)
Panicum aciculare — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum aciculare — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Panicum agrostoides var. agrostoides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum amarulum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum amarum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum amarum ssp. amarulum — Flora of North America
Panicum amarum ssp. amarum — Flora of North America
Panicum anceps — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum anceps ssp. anceps — Flora of North America
Panicum anceps ssp. rhizomatum — Flora of North America
Panicum angustifolium — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum annulum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum arenicoloides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum boscii var. boscii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum boscii var. molle — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum caerulescens — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum capillare ssp. capillare — Flora of North America
Panicum capillare var. capillare — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum ciliatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum clandestinum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum columbianum var. columbianum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum condensum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum depauperatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum dichotomiflorum ssp. dichotomiflorum — Flora of North America
Panicum dichotomiflorum var. dichotomiflorum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum erectifolium — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum fusiforme — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum gymnocarpon — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum lanuginosum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum latifolium — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum laxiflorum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum longiligulatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum lucidum — Manual of the Southeastern Flora (Small, 1933)
Panicum mattamuskeetense — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum maximum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum maximum — Manual of the Southeastern Flora (Small, 1933)
Panicum nudicaule
Panicum oligosanthes — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum ovinum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum pinetorum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum polyanthes — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum polycaulon — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum ramosum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum ravenelii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum repens — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum rhizomatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum rigidulum var. condensum
Panicum rigidulum var. rigidulum — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Panicum scoparium — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum sphaerocarpon var. inflatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum sphaerocarpon var. sphaerocarpon — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum sphagnicola — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum strigosum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum strigosum var. leucoblepharis — New combinations for Panicum ... (Poaceae) of the southeast US (Lelong, 1984)
Panicum tsugetorum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum virgatum var. virgatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum xalapense var. strictirameum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Panicum yadkinense — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Papyrius papyriferus — Manual of the Southeastern Flora (Small, 1933)
Parathelypteris simulata — Floristic synthesis of North America. BONAP (Kartesz, 2010)
Parietaria nummularia — Manual of the Southeastern Flora (Small, 1933)
Parkinsonia aculeata — Manual of the Southeastern Flora (Small, 1933)
Paronychia argyrocoma — Manual of the Southeastern Flora (Small, 1933)
Parsonsia balsamona — Manual of the Southeastern Flora (Small, 1933)
Parsonsia petiolata — Manual of the Southeastern Flora (Small, 1933)
Parthenium hysterophorus — Manual of the Southeastern Flora (Small, 1933)
Parthenium integrifolium — Manual of the Southeastern Flora (Small, 1933)
Paspalum bifidum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum bifidum — Manual of the Southeastern Flora (Small, 1933)
Paspalum conjugatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum conjugatum — Manual of the Southeastern Flora (Small, 1933)
Paspalum dilatatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum fissifolium
Paspalum floridanum + — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum fluitans — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum furcatum
Paspalum giganteum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum lentiferum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum notatum var. saurae — Synthesis of the North American Flora (Kartesz, 1999)
Paspalum praecox — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum quadrifarium — Flora of North America
Paspalum repens — Manual of the Southeastern Flora (Small, 1933)
Paspalum urvillei — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum vaginatum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Paspalum vaginatum — Manual of the Southeastern Flora (Small, 1933)
Pectis prostrata — Manual of the Southeastern Flora (Small, 1933)
Pediomelum subacaulis — Manual of the Southeastern Flora (Small, 1933)
Peniophyllum linifolium — Manual of the Southeastern Flora (Small, 1933)
Pennisetum alopecuroides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Pennisetum ciliare — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Pennisetum ciliare var. ciliare — Synthesis of the North American Flora (Kartesz, 1999)
Pennisetum glaucum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Pennisetum setaceum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Penstemon dissectus — Manual of the Southeastern Flora (Small, 1933)
Penstemon multiflorus — Manual of the Southeastern Flora (Small, 1933)
Penstemon pallidus — Manual of the Southeastern Flora (Small, 1933)
Penstemon penstemon — Manual of the Southeastern Flora (Small, 1933)
Penthorum sedoides — Manual of the Southeastern Flora (Small, 1933)
Peperomia pellucida — Flora of North America
Peramium ophioides — Manual of the Southeastern Flora (Small, 1933)
Peramium pubescens — Manual of the Southeastern Flora (Small, 1933)
Perilla frutescens var. crispa — PLANTS National Database
Persea borbonia var. pubescens
Persicaria densiflora
Persicaria muhlenbergii — Manual of the Southeastern Flora (Small, 1933)
Persicaria persicaria — Manual of the Southeastern Flora (Small, 1933)
Petalostemon albidus — Manual of the Southeastern Flora (Small, 1933)
Petalostemon carneus — Manual of the Southeastern Flora (Small, 1933)
Petalostemon gattingeri — Manual of the Southeastern Flora (Small, 1933)
Petalostemon gracilis — Manual of the Southeastern Flora (Small, 1933)
Petalostemon pinnatus ssp. trifoliatus
Petalostemon purpureus — Manual of the Southeastern Flora (Small, 1933)
Phacelia bicknellii — Manual of the Southeastern Flora (Small, 1933)
Phacelia bipinnatifida — Manual of the Southeastern Flora (Small, 1933)
Phacelia boykinii — Manual of the Southeastern Flora (Small, 1933)
Phacelia brevistyla — Manual of the Southeastern Flora (Small, 1933)
Phacelia dubia — Manual of the Southeastern Flora (Small, 1933)
Phacelia dubia — Manual of the Southeastern Flora (Small, 1933)
Phacelia fimbriata — Manual of the Southeastern Flora (Small, 1933)
Phaethusa occidentalis — Manual of the Southeastern Flora (Small, 1933)
Phaethusa virginica — Manual of the Southeastern Flora (Small, 1933)
Phalaris arundinacea var. arundinacea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Phalaris arundinacea var. picta — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Phalaris canariensis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Phaseolus lathyroides — Linnaeus
Phellodendron japonicum — Synthesis of the North American Flora (Kartesz, 1999)
Philadelphus grandiflorus — Manual of the Southeastern Flora (Small, 1933)
Philadelphus inodorus var. grandiflorus — Gray's Manual of Botany (Fernald, 1950)
Philotria densa — Manual of the Southeastern Flora (Small, 1933)
Philydrum cavaleriei
Phlebodium aureum — Manual of the Southeastern Flora (Small, 1933)
Phleum pratense — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Phlox glaberrima — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Phoradendron flavescens — Manual of the Southeastern Flora (Small, 1933)
Phoradendron serotinum ssp. serotinum — New combinations in Phoradendron leucarpum (Viscaceae) (Abbott & Thompson 2011)
Phragmites australis ssp. australis — The Plants of Pennsylvania (Rhoads & Block, 2007)
Phragmites phragmites — Manual of the Southeastern Flora (Small, 1933)
Phryma leptostachya — Manual of the Southeastern Flora (Small, 1933)
Phryma leptostachya var. leptostachya — Flora of North America
Phyllostachys aurea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Phyllostachys bambusoides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Phyllostachys nigra — Catalogue of New World grasses: Vol. I (Judziewicz et al., 2000)
Phyllostachys nigra var. henionis — Flora of West Virginia (Strausbaugh & Core, 1978)
Phyllostachys pubescens — Catalogue of New World grasses: Vol. I (Judziewicz et al., 2000)
Phyllostachys rubromarginata — Catalogue of New World grasses: Vol. I (Judziewicz et al., 2000)
Physalis angulata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Physalis angulata — Manual of the Southeastern Flora (Small, 1933)
Physalis barbadensis var. barbadensis — Gray's Manual of Botany (Fernald, 1950)
Physalis integrifolia — Keys to the flora of Florida, Physalis (Solanaceae) (Ward, 2008)
Physalis maritima — Gray's Manual of Botany (Fernald, 1950)
Physalis pruinosa — Manual of the Southeastern Flora (Small, 1933)
Physalis subglabrata — Manual of the Southeastern Flora (Small, 1933)
Physalis virginiana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Physalis virginiana — Manual of the Southeastern Flora (Small, 1933)
Physalis viscosa — Manual of the Southeastern Flora (Small, 1933)
Physalodes physalodes — Manual of the Southeastern Flora (Small, 1933)
Physostegia virginiana var. arenaria — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Phytolacca rigida — Manual of the Southeastern Flora (Small, 1933)
Piaropus crassipes — Manual of the Southeastern Flora (Small, 1933)
Pieris japonica — Flora of North America
Pilea microphylla
Pilea pumila var. deamii — PLANTS National Database
Pilosella aurantiaca
Pilosella caespitosa
Pilosella officinarum
Pilosella piloselloides
Pilostaxis baldwinii — Manual of the Southeastern Flora (Small, 1933)
Pinellia pedatisecta — Flora of China
Pinellia ternata — Flora of China
Pinellia tripartita — Flora of China
Pinguicula caerulea — Manual of the Southeastern Flora (Small, 1933)
Pinguicula elatior — Andre Michaux
Pinguicula lutea — Manual of the Southeastern Flora (Small, 1933)
Pinguicula pumila — Manual of the Southeastern Flora (Small, 1933)
Pinus rigida ssp. rigida
Pinus rigida ssp. serotina
Pittosporum tobira — Flora of North America
Pityopsis microcephala — Manual of the Southeastern Flora (Small, 1933)
Pityopsis microcephala — Manual of the Southeastern Flora (Small, 1933)
Pityothamnus reticulatus — Manual of the Southeastern Flora (Small, 1933)
Planera aquatica — Manual of the Southeastern Flora (Small, 1933)
Planera aquatica — Flora of North America
Plantago heterophylla
Plantago hybrida — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Plantago psyllium — Synthesis of the North American Flora (Kartesz, 1999)
Plantago rugelii var. asperula — PLANTS National Database
Plantago wrightiana — Flora of North America
Platanthera orbiculata var. orbiculata — Synthesis of the North American Flora (Kartesz, 1999)
Platanus acerifolia — Flora of North America
Pleea tenuifolia — Manual of the Southeastern Flora (Small, 1933)
Pleuropterus zuccarinii — Manual of the Southeastern Flora (Small, 1933)
Pluchea odorata var. succulenta — PLANTS National Database
Pluchea rosea var. rosea — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Poa annua — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Poa autumnalis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Poa compressa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Poa trivialis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Poa trivialis ssp. trivialis
Podostemon abrotanoides — Manual of the Southeastern Flora (Small, 1933)
Podostemon ceratophyllum — Manual of the Southeastern Flora (Small, 1933)
Pogonia affinis
Pogonia divaricata — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Pogonia ophioglossoides — Manual of the Southeastern Flora (Small, 1933)
Pogonia ophioglossoides — Flora of North America
Pogonia verticillata — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Poinsettia cyathophora — Manual of the Southeastern Flora (Small, 1933)
Poinsettia dentata — Manual of the Southeastern Flora (Small, 1933)
Poinsettia geniculata — Manual of the Southeastern Flora (Small, 1933)
Poinsettia heterophylla — Manual of the Southeastern Flora (Small, 1933)
Poinsettia heterophylla — Manual of the Southeastern Flora (Small, 1933)
Polemonium van-bruntiae — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polycodium arenicola — Polycodium (Ashe, 1931)
Polycodium ashei — Manual of the Southeastern Flora (Small, 1933)
Polycodium candicans — Manual of the Southeastern Flora (Small, 1933)
Polycodium floridanum — Manual of the Southeastern Flora (Small, 1933)
Polycodium melanocarpum — Manual of the Southeastern Flora (Small, 1933)
Polycodium neglectum — Manual of the Southeastern Flora (Small, 1933)
Polycodium sericeum — Polycodium (Ashe, 1931)
Polycodium stamineum — Manual of the Southeastern Flora (Small, 1933)
Polygala boykinii — Manual of the Southeastern Flora (Small, 1933)
Polygala cruciata var. aquilonia — PLANTS National Database
Polygala senega var. latifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polygala senega var. senega — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polygala viridescens — Manual of the Southeastern Flora (Small, 1933)
Polygonatum biflorum — Manual of the Southeastern Flora (Small, 1933)
Polygonatum commutatum — Manual of the Southeastern Flora (Small, 1933)
Polygonum aubertii — Synthesis of the North American Flora (Kartesz, 1999)
Polygonum aviculare — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polygonum aviculare var. aviculare — Gray's Manual of Botany (Fernald, 1950)
Polygonum caespitosum var. longisetum — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Polygonum cristatum — Gray's Manual of Botany (Fernald, 1950)
Polygonum densiflorum — Synthesis of the North American Flora (Kartesz, 1999)
Polygonum erectum
Polygonum longisetum
Polygonum punctatum var. confertiflorum — Synthesis of the North American Flora (Kartesz, 1999)
Polygonum setaceum + — Synthesis of the North American Flora (Kartesz, 1999)
Polymnia canadensis — Manual of the Southeastern Flora (Small, 1933)
Polymnia radiata — Manual of the Southeastern Flora (Small, 1933)
Polypodium aureum — Linnaeus
Polypodium polypodioides var. michauxianum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polypogon monspeliensis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Polypogon monspeliensis — Manual of the Southeastern Flora (Small, 1933)
Polystichum acrostichoides var. lonchitoides — PLANTS National Database
Polystichum falcatum — Linnaeus
Pontederia cordata — Manual of the Southeastern Flora (Small, 1933)
Pontederia lanceolata — Manual of the Southeastern Flora (Small, 1933)
Porteranthus stipulatus — Synthesis of the North American Flora (Kartesz, 1999)
Porteranthus trifoliatus — Synthesis of the North American Flora (Kartesz, 1999)
Potamogeton capillaceus + — Gray's Manual of Botany (Fernald, 1950)
Potamogeton crispus — Flora of North America
Potamogeton crispus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Potamogeton diversifolius — Manual of the Southeastern Flora (Small, 1933)
Potamogeton pulcher — Flora of North America
Potamogeton pulcher — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Potentilla canadensis — Manual of the Southeastern Flora (Small, 1933)
Potentilla monspeliensis — Manual of the Southeastern Flora (Small, 1933)
Potentilla pumila — Manual of the Southeastern Flora (Small, 1933)
Potentilla simplex — Manual of the Southeastern Flora (Small, 1933)
Poterium sanguisorba — Manual of the Southeastern Flora (Small, 1933)
Prenanthes serpentaria var. barbata
Proserpinaca palustris — Manual of the Southeastern Flora (Small, 1933)
Proserpinaca palustris — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Prunella vulgaris — Manual of the Southeastern Flora (Small, 1933)
Prunella vulgaris var. hispida — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Prunella vulgaris var. vulgaris — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Prunus americana var. lanata — Gray's Manual of Botany (Fernald, 1950)
Prunus avium — Manual of the Southeastern Flora (Small, 1933)
Prunus cuneata — Manual of the Southeastern Flora (Small, 1933)
Prunus pennsylvanica — Manual of the Southeastern Flora (Small, 1933)
Prunus pumila var. susquehanae — Synthesis of the North American Flora (Kartesz, 1999)
Prunus umbellata var. injuncunda — PLANTS National Database
Prunus umbellata var. umbellata — Flora of North America
Prunus yedoensis
Pseudognaphalium obtusifolium ssp. praecox — PLANTS National Database
Pseudosasa japonica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Psoralea virgata
Pueraria thunbergiana — Manual of the Southeastern Flora (Small, 1933)
Pycnanthemum aristatum — A study of Pycnanthemum (Labiatae) (Grant & Epling, 1943)
Pycnanthemum hyssopifolium — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Pycnodoria multifida — Manual of the Southeastern Flora (Small, 1933)
Pycnodoria vittata — Manual of the Southeastern Flora (Small, 1933)
Pycnothymus rigidus — Manual of the Southeastern Flora (Small, 1933)
Pylostachya balduinii
Pyrrhopappus carolinianus var. georgianus — Vascular Flora of the Carolinas (1968)
Pyrus americana — Gray's Manual of Botany (Fernald, 1950)
Pyrus angustifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Pyrus arbutifolia — Gray's Manual of Botany (Fernald, 1950)
Pyrus aucuparia — Gray's Manual of Botany (Fernald, 1950)
Pyrus coronaria — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Pyrus floribunda — Gray's Manual of Botany (Fernald, 1950)
Pyrus lancifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Pyrus malus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Pyrus melanocarpa — Gray's Manual of Botany (Fernald, 1950)
Q. stellata var. margaretta — Gray's Manual of Botany (Fernald, 1950)
Quamasia hyacinthina — Manual of the Southeastern Flora (Small, 1933)
Quercus alba — Manual of the Southeastern Flora (Small, 1933)
Quercus falcata var. pagodifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Quercus falcata var. triloba — Gray's Manual of Botany (Fernald, 1950)
Quercus margarettiae — Synthesis of the North American Flora (Kartesz, 1999)
Quercus montana — Manual of the Southeastern Flora (Small, 1933)
Quercus muehlenbergi — Manual of the Southeastern Flora (Small, 1933)
Quercus nuttallii — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Quercus prinoides var. acuminata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Quercus prinoides var. prinoides — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Quercus shumardii var. texana
Quercus stellata var. boyntonii
Quercus stellata var. paludosa
Quercus stellata var. stellata — Gray's Manual of Botany (Fernald, 1950)
Raimannia humifusa — Manual of the Southeastern Flora (Small, 1933)
Raimannia laciniata — Manual of the Southeastern Flora (Small, 1933)
Ramium niveum — Manual of the Southeastern Flora (Small, 1933)
Ranunculus arvensis var. tuberculatus
Ranunculus ficaria — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ranunculus ficaria — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ranunculus ficaria — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ranunculus ficaria — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ranunculus ficaria — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ranunculus ficaria ssp. bulbilifer — Ranunculus ficaria sensu lato (Sell 1994)
Ranunculus ficaria ssp. calthifolius — Ranunculus ficaria sensu lato (Sell 1994)
Ranunculus ficaria ssp. chrysocephalus — Ranunculus ficaria sensu lato (Sell 1994)
Ranunculus ficaria ssp. ficaria — Ranunculus ficaria sensu lato (Sell 1994)
Ranunculus ficaria ssp. ficariiformis — Ranunculus ficaria sensu lato (Sell 1994)
Ranunculus harveyi — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ranunculus harveyi var. harveyi — Synthesis of the North American Flora (Kartesz, 1999)
Ranunculus muricatus
Ranunculus obtusiusculus — Manual of the Southeastern Flora (Small, 1933)
Ranunculus palmatus — Manual of the Southeastern Flora (Small, 1933)
Ranunculus pusillus — Manual of the Southeastern Flora (Small, 1933)
Ranunculus septentrionalis — Manual of the Southeastern Flora (Small, 1933)
Ranunculus septentrionalis — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Ranunculus septentrionalis var. caricetorum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Raphanus raphanistrum ssp. raphanistrum — Flora of North America
Ratibida columnaris — Manual of the Southeastern Flora (Small, 1933)
Reynoutria polystachya
Rhacoma ilicifolia — Manual of the Southeastern Flora (Small, 1933)
Rhamnus frangula — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Rhaponticum repens — The families and genera of vascular plants (Kadereit & Jeffrey, 2007)
Rhexia ciliosa — Manual of the Southeastern Flora (Small, 1933)
Rhexia interior — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Rhexia interior — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Rhexia virginica var. purshii — Vascular Flora of the Carolinas (1968)
Rhizophora mangle — Manual of the Southeastern Flora (Small, 1933)
Rhizophora mangle — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Rhodiola roanensis — Manual of the Southeastern Flora (Small, 1933)
Rhododendron bakeri — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Rhododendron canescens + — Synthesis of the North American Flora (Kartesz, 1999)
Rhododendron carolinianum — Manual of the Southeastern Flora (Small, 1933)
Rhododendron catawbiense — Manual of the Southeastern Flora (Small, 1933)
Rhododendron maximum — Manual of the Southeastern Flora (Small, 1933)
Rhododendron minus — Manual of the Southeastern Flora (Small, 1933)
Rhododendron minus var. minus — Flora of North America
Rhododendron minus var. minus — Flora of North America
Rhododendron pilosum — Diplarche and Menziesia transferred to Rhododendron (Craven, 2011)
Rhus hirta — Manual of the Southeastern Flora (Small, 1933)
Rhus pumila — Andre Michaux
Rhus radicans var. radicans — Gray's Manual of Botany (Fernald, 1950)
Rhus radicans var. rydbergii — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Rhynchelytrum repens
Rhynchelytrum roseum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Rhynchosia erecta — Manual of the Southeastern Flora (Small, 1933)
Rhynchosia intermedia — Manual of the Southeastern Flora (Small, 1933)
Rhynchosia simplicifolius — Manual of the Southeastern Flora (Small, 1933)
Rhynchosia tomentosa — Manual of the Southeastern Flora (Small, 1933)
Rhynchospora globularis — Manual of the Southeastern Flora (Small, 1933)
Rhynchospora globularis var. globularis — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Rhynchospora globularis var. recognita — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ribes glandulosum — Manual of the Southeastern Flora (Small, 1933)
Richardia brasiliensis — Manual of the Southeastern Flora (Small, 1933)
Richardia scabra — Manual of the Southeastern Flora (Small, 1933)
Ridan alternifolia — Manual of the Southeastern Flora (Small, 1933)
Riedlea hirsuta — Manual of the Southeastern Flora (Small, 1933)
Robinia caragana
Robinia elliottii — Vascular Flora of the Carolinas
Robinia fertilis — Manual of the Southeastern Flora (Small, 1933)
Robinia viscosa var. hartwigii — Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984)
Robinia viscosa var. viscosa — Robinia (Leguminosae: Papilionoideae) (Isely & Peabody, 1984)
Rorippa nasturtium-aquaticum — Synthesis of the North American Flora (Kartesz, 1999)
Rosa micrantha — Vascular Flora of the Carolinas (1968)
Rosa obtusiuscula — PLANTS National Database
Rosa rubiginosa — Manual of the Southeastern Flora (Small, 1933)
Rosa virginiana — Manual of the Southeastern Flora (Small, 1933)
Rosa virginiana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Rottboellia exaltata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Rubus betulifolius — Vascular Flora of the Carolinas
Rubus discolor — Synthesis of the North American Flora (Kartesz, 1999)
Rubus linkianus — Manual of the Southeastern Flora (Small, 1933)
Rubus pascuus — Flora of North America
Rubus pensilvanicus — PLANTS National Database
Rubus procerus — Gray's Manual of Botany (Fernald, 1950)
Rubus repens
Rubus strigosus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Rudbeckia laciniata var. digitata — Synthesis of the North American Flora (Kartesz, 1999)
Rudbeckia laciniata var. humilis — Synthesis of the North American Flora (Kartesz, 1999)
Rudbeckia laciniata var. laciniata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ruellia malacosperma — Manual of the Southeastern Flora (Small, 1933)
Ruellia parviflora — Manual of the Southeastern Flora (Small, 1933)
Ruellia pedunculata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Ruellia simplex — Ruellia simplex, older name for R tweediana & R coerulea (Ezcurra & Daniel 2007)
Ruscus aculeatus
Sabal deeringiana — Manual of the Southeastern Flora (Small, 1933)
Sabal minor — Manual of the Southeastern Flora (Small, 1933)
Sabal palmetto — Manual of the Southeastern Flora (Small, 1933)
Sabatia decandra — Manual of the Southeastern Flora (Small, 1933)
Sabbatia calycina — Manual of the Southeastern Flora (Small, 1933)
Sabbatia grandiflora — Manual of the Southeastern Flora (Small, 1933)
Sabulina brevifolia — Manual of the Southeastern Flora (Small, 1933)
Sabulina caroliniana — Manual of the Southeastern Flora (Small, 1933)
Sabulina glabra — Manual of the Southeastern Flora (Small, 1933)
Sabulina groenlandica — Manual of the Southeastern Flora (Small, 1933)
Sabulina patula — Manual of the Southeastern Flora (Small, 1933)
Saccharum alopecuroidum — Synthesis of the North American Flora (Kartesz, 1999)
Saccharum contortum
Sacciolepis indica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sacciolepis striata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sagittaria engelmanniana ssp. engelmanniana — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Sagittaria engelmanniana ssp. longirostra — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Sagittaria longirostra — Manual of the Southeastern Flora (Small, 1933)
Sagittaria longirostra var. australis
Salicornia depressa — Flora of North America
Salicornia virginica — Synthesis of the North American Flora (Kartesz, 1999)
Salix humilis — Manual of the Southeastern Flora (Small, 1933)
Salix longipes — Manual of the Southeastern Flora (Small, 1933)
Salix tristis — Manual of the Southeastern Flora (Small, 1933)
Salsola kali — Flora of Virginia (Weakley, Ludwig & Townsend, 2012)
Salsola kali var. caroliniana — Gray's Manual of Botany (Fernald, 1950)
Salsola kali var. kali — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Salsola kali var. tenuifolia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Salsola pestifer — Manual of the Southeastern Flora (Small, 1933)
Salvia azurea
Salvia sclarea — Manual of the Southeastern Flora (Small, 1933)
Salvinia auriculata — Manual of the Southeastern Flora (Small, 1933)
Sambucus canadensis var. canadensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Samolus floribundus — Manual of the Southeastern Flora (Small, 1933)
Sanguisorba minor ssp. muricata — Synthesis of the North American Flora (Kartesz, 1999)
Sanicula canadensis — Manual of the Southeastern Flora (Small, 1933)
Sanicula marylandica — Manual of the Southeastern Flora (Small, 1933)
Sapindus drummondii
Sapindus marginatus — Manual of the Southeastern Flora (Small, 1933)
Sarcocornia pacifica — Flora of North America
Sarcocornia perennis — Synthesis of the North American Flora (Kartesz, 1999)
Sarothra gentianoides — Manual of the Southeastern Flora (Small, 1933)
Sarracenia flava — Manual of the Southeastern Flora (Small, 1933)
Sarracenia purpurea ssp. purpurea — Flora of North America
Sarracenia purpurea ssp. venosa — Flora of North America
Sarracenia purpurea ssp. venosa var. montana — Synthesis of the North American Flora (Kartesz, 1999)
Sarracenia purpurea ssp. venosa var. venosa — Carnivorous plants of the US & Canada (Schnell, 2002)
Sasa japonica
Satureja ashei
Satureja coccinea
Satureja rigida
Satureja vulgaris — Manual of the Southeastern Flora (Small, 1933)
Schisandra coccinea — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Schizachyrium scoparium ssp. scoparium — Synthesis of the North American Flora (Kartesz, 1999)
Schizandra coccinea — Manual of the Southeastern Flora (Small, 1933)
Schmaltzia crenata — Manual of the Southeastern Flora (Small, 1933)
Schoenocaulon dubium — Manual of the Southeastern Flora (Small, 1933)
Schoenolirion texanum
Schrankia microphylla var. floridana — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Schwalbea australis — Manual of the Southeastern Flora (Small, 1933)
Scirpus caespitosus — Manual of the Southeastern Flora (Small, 1933)
Scirpus californicus — Manual of the Southeastern Flora (Small, 1933)
Scirpus carinatus — Manual of the Southeastern Flora (Small, 1933)
Scirpus cubensis — Manual of the Southeastern Flora (Small, 1933)
Scirpus cyperinus — Manual of the Southeastern Flora (Small, 1933)
Scirpus eriophorum — Manual of the Southeastern Flora (Small, 1933)
Scirpus polyphyllus — Manual of the Southeastern Flora (Small, 1933)
Scirpus polyphyllus — Flora of North America
Scirpus pungens var. pungens — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Scirpus tabernaemontani — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Scleranthus annuus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Scleria ciliata var. elliottii — Gray's Manual of Botany (Fernald, 1950)
Scleria elliottii — Manual of the Southeastern Flora (Small, 1933)
Scleria oligantha — Manual of the Southeastern Flora (Small, 1933)
Scleria triglomerata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Scrophularia marilandica — Manual of the Southeastern Flora (Small, 1933)
Scutellaria altamaha ssp. australis
Scutellaria altamaha var. australis
Scutellaria ambigua — Manual of the Southeastern Flora (Small, 1933)
Scutellaria arguta — Manual of the Southeastern Flora (Small, 1933)
Scutellaria cuthbertii — Manual of the Southeastern Flora (Small, 1933)
Scutellaria incana — Manual of the Southeastern Flora (Small, 1933)
Scutellaria incana — Manual of the Southeastern Flora (Small, 1933)
Scutellaria incana — The American species of Scutellaria (Epling, 1942)
Scutellaria integrifolia var. multiglandulosa — Gray's Manual of Botany (Fernald, 1950)
Scutellaria leonardii — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Scutellaria nervosa — Manual of the Southeastern Flora (Small, 1933)
Scutellaria ovalifolia — Manual of the Southeastern Flora (Small, 1933)
Scutellaria ovalifolia ssp. hirsuta — The American species of Scutellaria (Epling, 1942)
Scutellaria ovata — Manual of the Southeastern Flora (Small, 1933)
Scutellaria ovata
Scutellaria ovata ssp. cuthbertii — PLANTS National Database
Scutellaria ovata ssp. pseudoarguta — PLANTS National Database
Scutellaria ovata ssp. rugosa var. arguta
Scutellaria punctata — The American species of Scutellaria (Epling, 1942)
Scutellaria serrata — Manual of the Southeastern Flora (Small, 1933)
Scutellaria serrata var. montana — Gray's Manual of Botany (Fernald, 1950)
Scutellaria serrata var. serrata — Gray's Manual of Botany (Fernald, 1950)
Sebastiana ligustrina — Manual of the Southeastern Flora (Small, 1933)
Sebastiania fruticosa — Synthesis of the North American Flora (Kartesz, 1999)
Secale cereale — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sedum nevii
Sedum nevii — Manual of the Southeastern Flora (Small, 1933)
Sedum rosea var. rosea — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Selaginella apoda var. ludoviciana
Senecio anonymus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Senecio crawfordii — Gray's Manual of Botany (Fernald, 1950)
Senecio plattensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Senecio plattensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Senecio schweinitzianus — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Serenoa repens — Manual of the Southeastern Flora (Small, 1933)
Sericocarpus bifoliatus — Manual of the Southeastern Flora (Small, 1933)
Serinia oppositifolia — Manual of the Southeastern Flora (Small, 1933)
Sesban exaltatus — Manual of the Southeastern Flora (Small, 1933)
Sesbania macrocarpa — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Sesuvium maritimum — Manual of the Southeastern Flora (Small, 1933)
Sesuvium portulacastrum — Manual of the Southeastern Flora (Small, 1933)
Sesuvium portulacastrum — Flora of North America
Setaria corrugata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria faberii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria geniculata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria glauca — Flora of West Virginia (Strausbaugh & Core, 1978)
Setaria italica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria lutescens — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria magna — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria verticillata var. verticillata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria viridis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setaria viridis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Setiscapella cleistogama — Manual of the Southeastern Flora (Small, 1933)
Setiscapella subulata — Manual of the Southeastern Flora (Small, 1933)
Seymeria macrophylla — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Sibbaldiopsis tridentata — Manual of the Southeastern Flora (Small, 1933)
Sida inflexa — Synthesis of the North American Flora (Kartesz, 1999)
Silene caroliniana ssp. caroliniana — Flora of North America
Silene latifolia — Manual of the Southeastern Flora (Small, 1933)
Silene pensylvanica — Flora of West Virginia (Strausbaugh & Core, 1978)
Silene virginica — Manual of the Southeastern Flora (Small, 1933)
Silphium asteriscus var. latifolium — Floristic synthesis of North America. BONAP (Kartesz, 2010)
Silphium asteriscus var. simpsonii — Floristic synthesis of North America. BONAP (Kartesz, 2010)
Silphium dentatum var. gatesii — Vascular Flora of the Carolinas
Silphium gracile — Manual of the Southeastern Flora (Small, 1933)
Silphium terebinthinaceum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Silphium terebinthinaceum var. pinnatifidum — Floristic synthesis of North America. BONAP (Kartesz, 2010)
Sinapis nigra — Linnaeus
Sisymbrium nasturtium-aquaticum — Manual of the Southeastern Flora (Small, 1933)
Sisyrinchium angustifolium — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Sisyrinchium exile
Sisyrinchium fuscatum — Flora of North America
Sisyrinchium fuscatum — Flora of North America
Sisyrinchium graminoides — Manual of the Southeastern Flora (Small, 1933)
Sitilias caroliniana — Manual of the Southeastern Flora (Small, 1933)
Sium cicutaefolium — Manual of the Southeastern Flora (Small, 1933)
Sium floridanum — Manual of the Southeastern Flora (Small, 1933)
Smilacina stellata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Smilax ecirrhata — Flora of North America
Smilax herbacea var. lasioneura — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Smilax maritima
Solanum nigrum — Manual of the Southeastern Flora (Small, 1933)
Solanum nigrum — Manual of the Southeastern Flora (Small, 1933)
Solanum nigrum — Manual of the Southeastern Flora (Small, 1933)
Solanum nigrum ssp. nigrum — Synthesis of the North American Flora (Kartesz, 1999)
Solanum pseudo-capsicum — Gray's Manual of Botany (Fernald, 1950)
Solanum ptycanthum
Solanum sarachoides — Gray's Manual of Botany (Fernald, 1950)
Solidago altissima — Manual of the Southeastern Flora (Small, 1933)
Solidago altissima — Manual of the Southeastern Flora (Small, 1933)
Solidago arguta ssp. caroliniana var. caroliniana — Flora of North America
Solidago arguta var. caroliniana
Solidago austrina — Manual of the Southeastern Flora (Small, 1933)
Solidago austrina — Manual of the Southeastern Flora (Small, 1933)
Solidago boottii — Manual of the Southeastern Flora (Small, 1933)
Solidago caesia var. curtisii
Solidago canadensis — Manual of the Southeastern Flora (Small, 1933)
Solidago canadensis — Manual of the Southeastern Flora (Small, 1933)
Solidago canadensis — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Solidago canadensis — Manual of the Southeastern Flora (Small, 1933)
Solidago canadensis var. canadensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Solidago canadensis var. canadensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Solidago canadensis var. rupestris — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Solidago canadensis var. scabra — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Solidago celtidifolia — Manual of the Southeastern Flora (Small, 1933)
Solidago chapmanii — Manual of the Southeastern Flora (Small, 1933)
Solidago curtisii var. curtisii — Flora of North America
Solidago faucibus — Flora of North America
Solidago gracillima — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Solidago hispida — Manual of the Southeastern Flora (Small, 1933)
Solidago juncea var. juncea — Synthesis of the North American Flora (Kartesz, 1999)
Solidago juncea var. neobohemica — Synthesis of the North American Flora (Kartesz, 1999)
Solidago leptocephala — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Solidago mexicana — Manual of the Southeastern Flora (Small, 1933)
Solidago ptarmicoides — Flora of North America
Solidago rigidiuscula — Manual of the Southeastern Flora (Small, 1933)
Solidago rugosa ssp. aspera var. aspera — Flora of North America
Solidago rugosa ssp. aspera var. celtidifolia — Flora of North America
Solidago rugosa ssp. aspera var. cronquistiana — Flora of North America
Solidago rugosa ssp. rugosa var. rugosa — Flora of North America
Solidago rugosa ssp. rugosa var. villosa — PLANTS National Database
Solidago sempervirens — Manual of the Southeastern Flora (Small, 1933)
Solidago sempervirens ssp. mexicana — Flora of North America
Solidago sempervirens ssp. sempervirens — Flora of North America
Solidago serotina — Manual of the Southeastern Flora (Small, 1933)
Solidago speciosa ssp. speciosa var. rigidiuscula — Flora of North America
Solidago speciosa ssp. speciosa var. speciosa — Flora of North America
Solidago speciosa var. erecta
Solidago spithamea — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Solidago stricta ssp. gracillima — Flora of North America
Solidago stricta ssp. gracillima — Flora of North America
Solidago tarda — Manual of the Southeastern Flora (Small, 1933)
Solidago uniligulata — Manual of the Southeastern Flora (Small, 1933)
Sonchus arvensis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Sonchus uliginosus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Sophia pinnata — Manual of the Southeastern Flora (Small, 1933)
Sophronanthe hispida — Manual of the Southeastern Flora (Small, 1933)
Sorghastrum elliottii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sorghastrum nutans — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sorghastrum secundum — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sorghum halepense — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sorghum vulgare var. vulgare — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Spartina alterniflora + — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Spathyema foetida — Manual of the Southeastern Flora (Small, 1933)
Sphenopholis obtusata var. intermedia — The Plants of Pennsylvania (Rhoads & Block, 2007)
Sphenopholis obtusata var. major — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Spilanthes americana — Manual of the Southeastern Flora (Small, 1933)
Spiraea corymbosa — Manual of the Southeastern Flora (Small, 1933)
Spiraea corymbosa — Flora of North America
Spiranthes cernua — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Spiranthes cernua var. ochroleuca — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Spiranthes gracilis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Spiranthes gracilis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Spiranthes gracilis var. brevilabris — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Spiranthes ovalis — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Spirodela polyrhiza — Manual of the Southeastern Flora (Small, 1933)
Sporobolus berteroanus — Manual of the Southeastern Flora (Small, 1933)
Sporobolus clandestinus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sporobolus compositus var. clandestinus
Sporobolus curtissii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sporobolus curtissii — Manual of the Southeastern Flora (Small, 1933)
Sporobolus gracilis — Manual of the Southeastern Flora (Small, 1933)
Sporobolus heterolepis — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sporobolus indicus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sporobolus junceus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sporobolus poiretii — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Sporobolus pyramidalis
Stachys ambigua — Manual of the Southeastern Flora (Small, 1933)
Stachys atlantica
Stachys caroliniana — A new hedge-nettle (Stachys: Lamiaceae) from SC (Nelson & Rayner, 2014)
Stachys cordata — Manual of the Southeastern Flora (Small, 1933)
Stachys hyssopifolia var. lythroides — Stachys (Labitae) in Southeastern United States (Nelson, 1981)
Stachys lythroides — Manual of the Southeastern Flora (Small, 1933)
Stachys nuttallii — Synthesis of the North American Flora (Kartesz, 1999)
Stachys nuttallii — Synthesis of the North American Flora (Kartesz, 1999)
Stachys olympica — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Stachys palustris var. palustris — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Stachys palustris var. pilosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Stachys subcordata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Stachys tenuifolia — Synthesis of the North American Flora (Kartesz, 1999)
Stachys tenuifolia var. hispida — Gray's Manual of Botany (Fernald, 1950)
Stachys tenuifolia var. latidens — Synthesis of the North American Flora (Kartesz, 1999)
Stachys tenuifolia var. tenuifolia — Guide to the Vascular Plants of the Blue Ridge (Wofford, 1989)
Stachys tenuifolia var. tenuifolia — Synthesis of the North American Flora (Kartesz, 1999)
Steironema ciliatum — Manual of the Southeastern Flora (Small, 1933)
Steironema gramineum — Manual of the Southeastern Flora (Small, 1933)
Steironema heterophyllum — Manual of the Southeastern Flora (Small, 1933)
Steironema hybridum — Manual of the Southeastern Flora (Small, 1933)
Steironema intermedium — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Steironema lanceolatum — Manual of the Southeastern Flora (Small, 1933)
Steironema quadriflorum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Steironema tonsum — Manual of the Southeastern Flora (Small, 1933)
Stenophyllus barbatus — Manual of the Southeastern Flora (Small, 1933)
Stenophyllus stenophyllus — Manual of the Southeastern Flora (Small, 1933)
Stipa avenacea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Stipulicida setacea var. setacea — Flora of North America
Stomoisia cornuta — Manual of the Southeastern Flora (Small, 1933)
Stomoisia juncea — Manual of the Southeastern Flora (Small, 1933)
Stomoisia virgatula — Manual of the Southeastern Flora (Small, 1933)
Streptopus amplexifolius var. americanus — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Streptopus lanceolatus var. roseus — PLANTS National Database
Streptopus roseus — Manual of the Southeastern Flora (Small, 1933)
Strophocaulos arvensis — Manual of the Southeastern Flora (Small, 1933)
Strophostyles helvula — Synthesis of the North American Flora (Kartesz, 1999)
Stylodon carolinensis — Manual of the Southeastern Flora (Small, 1933)
Svida alternifolia — Manual of the Southeastern Flora (Small, 1933)
Svida amomum — Manual of the Southeastern Flora (Small, 1933)
Svida femina — Manual of the Southeastern Flora (Small, 1933)
Svida microcarpa — Manual of the Southeastern Flora (Small, 1933)
Svida priceae — Manual of the Southeastern Flora (Small, 1933)
Svida stricta — Manual of the Southeastern Flora (Small, 1933)
Swida alternifolia — New England Wildflower Society’s Flora Novae Angliae (Haines, 2011)
Swida amomum var. amomum — New England Wildflower Society’s Flora Novae Angliae (Haines, 2011)
Swida asperifolia
Swida drummondii
Swida racemosa — New England Wildflower Society’s Flora Novae Angliae (Haines, 2011)
Swida stolonifera
Swida stricta
Symphoricarpos symphoricarpos — Manual of the Southeastern Flora (Small, 1933)
Symphyotrichum carolinianum — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Symphyotrichum cordifolium — Flora of North America
Symphyotrichum cordifolium — Flora of North America
Symphyotrichum praealtum — Flora of North America
Symphyotrichum racemosum var. racemosum — Synthesis of the North American Flora (Kartesz, 1999)
Symphyotrichum rhiannon — Flora of North America
Symphyotrichum sagittifolium — Review of the taxonomy of Aster... emphasizing New World species (Nesom, 1994)
Symphyotrichum subulatum var. subulatum — Flora of North America
Syndesmon thalictroides — Manual of the Southeastern Flora (Small, 1933)
Syntherisma filiformis — Manual of the Southeastern Flora (Small, 1933)
Syntherisma sanguinalis — Manual of the Southeastern Flora (Small, 1933)
Talinum mengesii — Synthesis of the North American Flora (Kartesz, 1999)
Talinum mengesii — Synthesis of the North American Flora (Kartesz, 1999)
Talinum mengesii — Manual of the Southeastern Flora (Small, 1933)
Talinum paniculatum var. paniculatum — Synthesis of the North American Flora (Kartesz, 1999)
Talinum teretifolium — Synthesis of the North American Flora (Kartesz, 1999)
Tamarix gallica — Manual of the Southeastern Flora (Small, 1933)
Tamarix parviflora — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Taxodium distichum var. distichum — Flora of North America
Taxodium distichum var. imbricarium — Flora of North America
Thalesia uniflora — Manual of the Southeastern Flora (Small, 1933)
Thalictrum caulophylloides — Manual of the Southeastern Flora (Small, 1933)
Thalictrum coriaceum — Manual of the Southeastern Flora (Small, 1933)
Thalictrum debile — Manual of the Southeastern Flora (Small, 1933)
Thalictrum subrotundum — Vascular Flora of the Carolinas (1968)
Thaspium trifoliatum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Thaspium trifoliatum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Thaspium trifoliatum var. aureum — Manual of the Southeastern Flora (Small, 1933)
Thaspium trifoliatum var. trifoliatum — Manual of the Southeastern Flora (Small, 1933)
Thea sinensis
Thelypteris dentata — Manual of the Southeastern Flora (Small, 1933)
Thelypteris noveboracensis — Manual of the Southeastern Flora (Small, 1933)
Thelypteris thelypteris — Manual of the Southeastern Flora (Small, 1933)
Thelypteris torresiana
Thermopsis mollis var. fraxinifolia — Vascular Flora of the Southeastern States (Cronquist 1980, Isely 1990)
Therophon aconitifolium — Manual of the Southeastern Flora (Small, 1933)
Thuja orientalis — Linnaeus
Thysanella fimbriata — Manual of the Southeastern Flora (Small, 1933)
Tiarella cordifolia — Flora of North America
Tiarella cordifolia — Flora of North America
Tiaridium indicum — Manual of the Southeastern Flora (Small, 1933)
Tilia cordata — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Tilia floridana — Vascular Flora of the Carolinas
Tiniaria cilinodis — Manual of the Southeastern Flora (Small, 1933)
Tipularia unifolia — Manual of the Southeastern Flora (Small, 1933)
Tithymalopsis corollata — Manual of the Southeastern Flora (Small, 1933)
Tithymalopsis ipecacuanhae — Manual of the Southeastern Flora (Small, 1933)
Tithymalopsis mercurialina — Manual of the Southeastern Flora (Small, 1933)
Tithymalus cyparissias
Tithymalus esula
Tofieldia glabra — Manual of the Southeastern Flora (Small, 1933)
Tofieldia glutinosa — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Tofieldia tenuifolia — The Genera of Tofieldiaceae in the southeastern US (Zomlefer, 1996)
Tortipes amplexifolius — Manual of the Southeastern Flora (Small, 1933)
Toxicodendron quercifolium
Toxicodendron radicans var. rydbergii
Toxicodendron toxicodendron — Manual of the Southeastern Flora (Small, 1933)
Toxylon pomiferum — Manual of the Southeastern Flora (Small, 1933)
Tracaulon arifolium — Manual of the Southeastern Flora (Small, 1933)
Trachelospermum difforme — Manual of the Southeastern Flora (Small, 1933)
Tradescantia brevicaulis — Manual of the Southeastern Flora (Small, 1933)
Tradescantia hirsuticaulis — Flora of North America
Tradescantia hirsutiflora — Flora of North America
Tradescantia ohiensis — Flora of North America
Tradescantia pilosa — Manual of the Southeastern Flora (Small, 1933)
Tradescantia reflexa — Manual of the Southeastern Flora (Small, 1933)
Tradescantia subaspera var. subaspera — PLANTS National Database:
Tradescantia virginiana — Flora of North America
Tragia urticaefolia — Manual of the Southeastern Flora (Small, 1933)
Tragiola pilosa — Manual of the Southeastern Flora (Small, 1933)
Triadenum tubulosum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triadenum walteri — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triantha glutinosa — Manual of the Southeastern Flora (Small, 1933)
Triantha racemosa — Manual of the Southeastern Flora (Small, 1933)
Trichophorum caespitosum — Synthesis of the North American Flora (Kartesz, 1999)
Trichostema dichotomum var. lineare — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Trichostema lineare — Manual of the Southeastern Flora (Small, 1933)
Tridens carolinianus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Tridens flavus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Tridens strictus — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Trientalis borealis — Flora of North America
Trientalis borealis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Trifolium procumbens — Manual of the Southeastern Flora (Small, 1933)
Trillium freemanii
Trillium hugeri — Manual of the Southeastern Flora (Small, 1933)
Trillium lanceolatum — Previously misidentified as
Trillium lancifolium — Previously misidentified as
Trillium ludovicianum — Manual of the Southeastern Flora (Small, 1933)
Trillium ludovicianum — Trilliums of Georgia. Tipularia (Patrick, 2007)
Trillium viride var. luteum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triodia drummondii — Manual of the Southeastern Flora (Small, 1933)
Triodia flava — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triodia stricta — Manual of the Southeastern Flora (Small, 1933)
Triosteum perfoliatum var. aurantiacum — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Triphora trianthophora ssp. trianthophora — Flora of North America
Triplasis americana — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Triplasis americana — Manual of the Southeastern Flora (Small, 1933)
Triplasis purpurea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Triplasis purpurea — Manual of the Southeastern Flora (Small, 1933)
Tripleurospermum perforata — Synthesis of the North American Flora (Kartesz, 1999)
Tripsacum dactyloides var. dactyloides — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Tripsacum dactyloides var. occidentale — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Triticum aestivum
Triticum aestivum
Tubiflora carolinensis — Manual of the Southeastern Flora (Small, 1933)
Tulipastrum acuminatum — Manual of the Southeastern Flora (Small, 1933)
Tulipastrum cordatum — Manual of the Southeastern Flora (Small, 1933)
Tumion taxifolium — Manual of the Southeastern Flora (Small, 1933)
Turritis glabra — Flora of North America
Typha angustifolia — Manual of the Southeastern Flora (Small, 1933)
Typha angustifolia — Manual of the Southeastern Flora (Small, 1933)
Ulmus americana — Manual of the Southeastern Flora (Small, 1933)
Ulmus floridana — Manual of the Southeastern Flora (Small, 1933)
Ulmus fulva — Manual of the Southeastern Flora (Small, 1933)
Unifolium canadense — Manual of the Southeastern Flora (Small, 1933)
Uniola latifolia — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Uniola laxa — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Uniola paniculata — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Uniola paniculata — Flora of North America
Uniola sessiliflora — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Urechites lutea
Urtica dioica var. dioica — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Urtica gracilis — Manual of the Southeastern Flora (Small, 1933)
Utricularia foliosa — Manual of the Southeastern Flora (Small, 1933)
Utricularia gibba — Manual of the Southeastern Flora (Small, 1933)
Utricularia inflata — Manual of the Southeastern Flora (Small, 1933)
Utricularia macrorhiza — Manual of the Southeastern Flora (Small, 1933)
Utricularia pumila — Manual of the Southeastern Flora (Small, 1933)
Utricularia radiata — Manual of the Southeastern Flora (Small, 1933)
Utricularia vulgaris ssp. macrorhiza — Flora of North America
Uvularia puberula var. nitida — Notes on Uvularia puberula Michaux (Liliaceae) (Uttal, 1991)
Uvularia puberula var. puberula — Notes on Uvularia puberula Michaux (Liliaceae) (Uttal, 1991)
Vaccinium ashei — North American blueberries w notes on other groups of Vacciniaceae (Camp, 1945)
Vaccinium australe — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Vaccinium brachycerum — Andre Michaux
Vaccinium corymbosum — Flora of North America
Vaccinium corymbosum — Flora of North America
Vaccinium corymbosum — Flora of North America
Vaccinium crassifolium — Flora of North America
Vaccinium erythrocarpum ssp. erythrocarpum — Flora of North America
Valerianella olitoria — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Valerianella radiata — Manual of the Southeastern Flora (Small, 1933)
Valerianella radiata var. intermedia — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Valerianella umbilicata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Valerianella woodsiana — Manual of the Southeastern Flora (Small, 1933)
Veratrum latifolium — The genera of Melanthiaceae in the southeastern United States (Zomlefer, 1997)
Veratrum viride var. viride — Flora of North America
Verbascum thapsus ssp. thapsus — Flora of North America
Verbena bipinnatifida — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Verbena litoralis var. brevibracteata — Floristic synthesis of North America (Kartesz 2010). Biota of N. America (BONAP)
Verbena urticaefolia — Manual of the Southeastern Flora (Small, 1933)
Verbena urticifolia var. leiocarpa — PLANTS National Database
Verbesina alba — Manual of the Southeastern Flora (Small, 1933)
Veronica longifolia — Synthesis of the North American Flora (Kartesz, 1999)
Veronica officinalis var. tournefortii — PLANTS National Database
Vesiculina purpurea — Manual of the Southeastern Flora (Small, 1933)
Viburnum dentatum var. scabrellum — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Viburnum dentatum var. venosum — Synthesis of the North American Flora (Kartesz, 1999)
Viburnum opulus var. trilobum — Review of the nearctic Viburnum (McAtee, 1956)
Viburnum trilobum — Gray's Manual of Botany (Fernald, 1950)
Vicia hugeri — Vascular Flora of the Carolinas
Vicia sativa var. angustifolia
Viguiera porteri — Manual of the Southeastern Flora (Small, 1933)
Viola affinis — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Viola blanda — Manual of the Southeastern Flora (Small, 1933)
Viola brittoniana — Gray's Manual of Botany (Fernald, 1950)
Viola canadensis — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola emarginata + — Vascular Flora of the Carolinas
Viola incognita — Manual of the Southeastern Flora (Small, 1933)
Viola lanceolata — Manual of the Southeastern Flora (Small, 1933)
Viola macloskeyi — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola missouriensis — PLANTS National Database
Viola pallens — Manual of the Southeastern Flora (Small, 1933)
Viola palmata — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola palmata var. esculenta
Viola palmata var. palmata — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Viola palmata var. palmata — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Viola palmata var. pedatifida — Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Viola palmata var. sororia — Vascular Flora of the Carolinas
Viola palmata var. triloba — Vascular Flora of the Carolinas (1968)
Viola pectinata — Gray's Manual of Botany (Fernald, 1950)
Viola pedata var. lineariloba — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Viola pedata var. pedata — Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Viola pedata var. ranunculifolia — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola pedatifida ssp. brittoniana — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola pedatifida ssp. brittoniana — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola pensylvanica var. leiocarpa — Gray's Manual of Botany (Fernald, 1950)
Viola priceana — Manual of the Southeastern Flora (Small, 1933)
Viola pubescens — Manual of the Southeastern Flora (Small, 1933)
Viola pubescens — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Viola pubescens — Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Viola rafinesquei
Viola septemloba ssp. egglestonii — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola septemloba ssp. septemloba — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola vittata — Manual of the Southeastern Flora (Small, 1933)
Viola walteri var. appalachiensis — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viola walteri var. walteri — Violaceae of the Southeastern US (McKinney & Russell, 2002)
Viorna crispa — Manual of the Southeastern Flora (Small, 1933)
Viorna fremontii
Viorna glaucophylla — Manual of the Southeastern Flora (Small, 1933)
Viorna ochroleuca — Manual of the Southeastern Flora (Small, 1933)
Viorna reticulata — Manual of the Southeastern Flora (Small, 1933)
Viorna versicolor — Manual of the Southeastern Flora (Small, 1933)
Viorna viorna — Manual of the Southeastern Flora (Small, 1933)
Vitis aestivalis var. argentifolia — Synthesis of the North American Flora (Kartesz, 1999)
Vitis bicolor — Manual of the Southeastern Flora (Small, 1933)
Vitis cordifolia — Manual of the Southeastern Flora (Small, 1933)
Vitis munsoniana
Vitis vulpina — Manual of the Southeastern Flora (Small, 1933)
Vulpia myuros — Flora of North America
Vulpia octoflora var. octoflora — Flora of North America
Waldsteinia doniana — Manual of the Southeastern Flora (Small, 1933)
Waldsteinia fragarioides — Manual of the Southeastern Flora (Small, 1933)
Waldsteinia fragarioides var. fragarioides — Gray's Manual of Botany (Fernald, 1950)
Waldsteinia fragarioides var. parviflora — Gray's Manual of Botany (Fernald, 1950)
Waldsteinia lobata — Manual of the Southeastern Flora (Small, 1933)
Waltheria americana — Manual of the Southeastern Flora (Small, 1933)
Wisteria Xformosa — Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Woodsia ilvensis — Manual of the Southeastern Flora (Small, 1933)
Woodsia ilvensis — Flora of North America
Woodsia obtusa — Manual of the Southeastern Flora (Small, 1933)
Woodsia obtusa ssp. obtusa — Flora of North America
Woodsia scopulina — Manual of the Southeastern Flora (Small, 1933)
Woodsia scopulina ssp. appalachiana — Flora of North America
Xanthium strumarium var. canadense — PLANTS National Database
Xanthium strumarium var. strumarium — Vascular Flora of the Carolinas (1968)
Xanthorhiza simplicissima — Flora of North America
Xanthorrhiza simplicissima — Manual of the Southeastern Flora (Small, 1933)
Xanthoxalis colorea — Manual of the Southeastern Flora (Small, 1933)
Xanthoxalis corniculata — Manual of the Southeastern Flora (Small, 1933)
Xanthoxalis grandis — Manual of the Southeastern Flora (Small, 1933)
Xanthoxalis macrantha — Manual of the Southeastern Flora (Small, 1933)
Xanthoxylum americanum — Gray's Manual of Botany (Fernald, 1950)
Xanthoxylum clava-herculis — Gray's Manual of Botany (Fernald, 1950)
Xyris communis — Manual of the Southeastern Flora (Small, 1933)
Xyris elata — Manual of the Southeastern Flora (Small, 1933)
Xyris flexuosa — Manual of the Southeastern Flora (Small, 1933)
Xyris pallescens — Manual of the Southeastern Flora (Small, 1933)
Xyris scabrifolia — Manual of the Southeastern Flora (Small, 1933)
Yucca aloifolia — Manual of the Southeastern Flora (Small, 1933)
Yucca filamentosa — Synthesis of the North American Flora (Kartesz, 1999)
Yucca filamentosa — Manual of the Southeastern Flora (Small, 1933)
Yucca flaccida — Manual of the Southeastern Flora (Small, 1933)
Yucca gloriosa — Manual of the Southeastern Flora (Small, 1933)
Zamia integrifolia — Flora of North America
Zamia umbrosa — Manual of the Southeastern Flora (Small, 1933)
Zenobia cassinefolia — Manual of the Southeastern Flora (Small, 1933)
Zenobia pulverulenta — Manual of the Southeastern Flora (Small, 1933)
Zephyranthes atamasca — Flora of North America
Zigadenus elegans — Flora of North America
Zizania aquatica var. aquatica — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Zizania aquatica var. aquatica — Flora of North America
Zizania miliacea — Andre Michaux
Zizaniopsis miliacea — Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Zizia aurea — Manual of the Southeastern Flora (Small, 1933)
Zizia bebbii — Manual of the Southeastern Flora (Small, 1933)
Zizia cordata — Manual of the Southeastern Flora (Small, 1933)
Zizia latifolia — Manual of the Southeastern Flora (Small, 1933)
Zornia bracteata — Manual of the Southeastern Flora (Small, 1933)
Zosterella dubia — Manual of the Southeastern Flora (Small, 1933)
Zygadenus glaberrimus — Manual of the Southeastern Flora (Small, 1933)