Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Rosales
Series: Parvifoliae
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (10/20/20):
Crataegus uniflora
FAMILY
Rosaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Oneflower Hawthorn at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Crataegus uniflora
FAMILY
Rosaceae
SYNONYMOUS WITH Flora of North America
Crataegus uniflora
SYNONYMOUS WITH Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus uniflora var. uniflora
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 097-20-001:
Crataegus uniflora FAMILY Rosaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Crataegus uniflora
INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus gregalis
INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus pentaneura
INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus raleighensis
INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus uniflora
COMMON NAME:
Oneflower Hawthorn, Dwarf Haw
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_crun_001_lvd
)
JK Marlow jkm230228_1303
February Pickens County SC
Glassy Mountain Heritage Preserve
Twigs: new growth densely appressed-pubescent, 1-year-old brown, older grayish, per Flora of North America.
)
JK Marlow jkm200425_4270
April Greenville County SC
Glassy Mountain Heritage Preserve
The name "one-flowered" is not to be taken literally (up to 6 per inf.), per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).
)
JK Marlow jkm200425_4273
April Greenville County SC
Glassy Mountain Heritage Preserve
Its needlelike spines are more apt to be felt than seen, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).
)
JK Marlow jkm200425_4275
April Greenville County SC
Glassy Mountain Heritage Preserve
Leaves typically short-petiolate, prominently toothed, usually glossy, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).
)
JK Marlow jkm200425_4276
April Greenville County SC
Glassy Mountain Heritage Preserve
Shrubby habit, small leaves and slender thorns, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).
)
JK Marlow jkm200425_4278
April Greenville County SC
Glassy Mountain Heritage Preserve
Slender thorns (2-7cm long), per Weakley's Flora (2020).
)
Roxanna Martin rlm42810_021
April Spartanburg County SC
)
Ron Lance rwlcuniflora_1
April-May SC
)
JK Marlow jkm200508_4685
May Pickens County SC
Glassy Mountain Heritage Preserve
Sepals foliaceous and distinctly serrate, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).
)
Roxanna Martin rlm5110_049
May Spartanburg County SC
)
Roxanna Martin rlm53010_464
May Spartanburg County SC
)
Roxanna Martin rlm71010_93
July Spartanburg County SC
Foliaceous calyx lobes persistent on the fruit, per Weakley's Flora (2020).
)
Roxanna Martin rlm91209_302
September Spartanburg County SC
)
JK Marlow jkm181101_5464
November Greenville County SC
)
JK Marlow jkm181101_5468
November Greenville County SC
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (10/20/20):
Crataegus uniflora
FAMILY
Rosaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Crataegus uniflora
FAMILY
Rosaceae
SYNONYMOUS WITH
Flora of North America
Crataegus uniflora
SYNONYMOUS WITH
Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus uniflora var. uniflora
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 097-20-001:
Crataegus uniflora
FAMILY
Rosaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Crataegus uniflora
INCLUDING
Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus gregalis
INCLUDING
Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus pentaneura
INCLUDING
Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus raleighensis
INCLUDING
Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus uniflora
405
Shrub
Perennial
Habitat: Thin woodlands, disturbed lands, roadsides, rock outcrops, often in xeric or sub-xeric conditions, per Weakley's Flora
Native to the Carolinas & Georgia
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
IS THE PLANT "ARMED"?
Armed with very slender nodal thorns (> 3cm long, about 1mm in diameter)
LEAVES:
Deciduous
Simple
Alternate
Petioles 2-5mm, usually pubescent, sometimes black-glandular, esp in spring
FLOWER:
Spring
White
Radially symmetrical
5-lobed calyx
5 petals
Usually 20 stamens (anthers white, yellow or rarely pink)
Inferior ovary
Inflorescences of 1-6 flowers, usually 1
FRUIT:
Summer/Fall
Green, yellow or red
Pome
TO LEARN MORE about this plant, look it up in a good book!
- Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005) p332
- Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014) p342
- Native Shrubs and Woody Vines of the Southeast (Foote & Jones, 1989) p076
- Trees of the Southeastern United States (Duncan & Duncan, 1988) p293
- Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004) p123
- Wildflowers of the Sandhills Region (Sorrie, 2011) p103