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Everlasting Pea,
Lathyrus latifolius
Petioles broadly winged, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Erect Milkpea,
Galactia erecta
Leaves rise above the axillary inflorescence on a long petiole. — Will Stuart
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Dove's-foot Cranesbill,
Geranium molle
Long petioles appear attached to center of the nearly round basal leaves, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
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Wild Lime,
Zanthoxylum fagara
Petiole & rachis winged; leaflets to 3cm long, apex rounded, obtuse, or retuse, per Weakley's Flora.
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Trifoliate Orange,
Citrus trifoliata
Recognize it by its thorned branches, winged petioles, and 3 leaflets, per Trees of the Southeastern United States (Duncan & Duncan, 1988).
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Silverleaf Croton,
Croton punctatus
Leaves ovate to ovate-lanceolate, 2-6cm long, 1-4cm wide, entire, petioles 1-3cm, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Silver Croton,
Croton argyranthemus
Leaves with relatively long petioles (found in dry longleaf pinelands), per Weakley's Flora (2015).
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Slender Threeseed Mercury,
Acalypha gracilens
Stems erect, pubescent. Leaf petioles 0.2-1.2(-1.8)cm, per Flora of North America.
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Common Threeseed Mercury,
Acalypha rhomboidea
Petioles of principal leaves 1-8cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Common Threeseed Mercury,
Acalypha rhomboidea
Petioles of the larger leaves regularly more than half as long as blades, per Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist, 1991).
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Limestone Flowering Spurge?,
Euphorbia apocynifolia
These individuals have long petioles (0.4-1.2cm), oval to ovate leaves, short stature, ...
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Allegheny-spurge,
Pachysandra procumbens
1-5 fragrant flower spikes nestle at the base of a petiole , per All About South Carolina Wildflowers (Midgley, 1999).
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Carolina Holly,
Ilex ambigua
Petiole w U-shaped channel above, white appressed trichomes in the channel, per Weakley's Flora (2020).
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American Wahoo,
Euonymus atropurpureus
Petioles 8-20mm long, per Weakley's Flora (2012).
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Running Strawberry-bush,
Euonymus obovatus
Upper leaves widest at or beyond the middle; petioles mostly 3-5mm long, per Weakley's Flora (2012).
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Wintercreeper,
Euonymus fortunei
Leaves broadly oval, moderately thick, with base tapering to petiole, per Nonnative Invasive Plants of Southern Forests (Miller, 2003).
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Black Maple,
Acer nigrum
Usually a prominent stipule at petiole base (vs. not in A. saccharum), per The Native Maples of Georgia (Ware, 2003).
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Norway Maple,
Acer platanoides
Petioles of Norway maple exude a milky sap when broken (vs the native Sugar Maple's sap is clear), per New Invaders of the Southeast (Rawlins et al., 2018).
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Spotted Jewelweed,
Impatiens capensis
The plant has a loose aspect due to its 4" petioles, per All About South Carolina Wildflowers (Midgley, 1999).
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Prickly Fanpetals,
Sida spinosa
The specific epithet refers to the short spine at the base of each petiole, per Wildflowers of the Southern Mountains (Smith, 1998).
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Arrowleaf Sida,
Sida rhombifolia var. rhombifolia
Peduncles many times longer than subtending petioles, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Velvetleaf,
Abutilon theophrasti
Petiole 3-12 cm, stellate hairy, per Flora of China.
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Mountain Camellia,
Stewartia ovata
Petiole winged, enclosing buds. Twigs brown, glabrous, per Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004).
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Walter’s Marsh St. Johnswort,
Triadenum walteri
Lvs mostly elliptic, to ~ 2-2.5" long, tip rounded, base rounded to tapered, petiole distinct, per Vascular Plants of North Carolina.
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Shrubby St. Johnswort,
Hypericum prolificum
Leaves 1-2" long, ~ 1/2" wide, narrowing into a very short grooved petiole, per Woody Plants of the Blue Ridge (Lance).
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Dooryard Violet,
Viola sororia var. sororia
About V. palmata var. sororia, "Pubescent or at least the petioles pubescent", per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Ovate-leaf Violet,
Viola fimbriatula
Petioles, leaf lower surfaces, and peduncles ± hirtellous (rarely glabrous), per Weakley's Flora (2020).
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Arrowleaf Violet,
Viola sagittata
Petioles equal or longer than blades, per Weakley's Flora.
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Southern Coastal Violet,
Viola septemloba
Blades and petioles mostly glabrous, unlike the similar-looking V. palmata, per Vascular Plants of North Carolina.
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Sweet White Violet,
Viola blanda
Petioles and peduncles usually reddish-tinged, per Weakley's Flora.
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Primrose-leaf Violet,
Viola primulifolia
Leaf blade tissue decurrent on the petiole, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Strapleaf Violet,
Viola vittata
Leaf blades linear to linear-lanceolate, 8-15× as long as broad, tapering gradually to petiole, per Weakley's Flora (2022).
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Walter's Violet,
Viola walteri
Petioles, peduncles and stems moderately to densely puberulent, per Weakley's Flora.
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Johnny Jump-up,
Viola rafinesquei
Leaves rounded with long petioles (1-3cm); stipules large, cleft and lobed, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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English Violet,
Viola odorata
Leaves basal (and from stolons), 5-10, ascending to erect; petiole 2-17cm, per Flora of North America.
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Eastern Leatherwood,
Dirca palustris
Leaves elliptic or oval, short-petioled, per Woody Plants of the Blue Ridge (Lance).
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Colombian Waxweed,
Cuphea carthagenensis
Leaves opposite (none whorled); petioles to 8 mm long, often very short, per Weakley's Flora (2012).
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Pale Meadowbeauty,
Rhexia mariana var. mariana
Leaves 3-nerved, short-petioled, hairy, typically 1-2" long & 1/3 as wide, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
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Common Water-purslane,
Ludwigia palustris
Reddish stems and ovate leaves up to 1" on long petioles, per Wildflowers of the Southern Mountains (Smith, 1998).
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English Ivy,
Hedera helix var. helix
Leaves dark green with whtish veins radiating from the petiole, per Nonnative Invasive Plants of Southern Forests (Miller, 2003).
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Dune Pennywort,
Hydrocotyle bonariensis
Leaves peltate, orbicular to suborbicular, crenate, w petioles 7-20(30)cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Shield Marsh-pennywort,
Hydrocotyle verticillata
Leaves peltate, lacking a sinus extending to the attachment of the petiole, per Weakley's Flora (2015).
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Whorled Marsh-pennywort,
Hydrocotyle tribotrys
Peduncles shorter to longer than petioles, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Lawn Marsh-pennywort,
Hydrocotyle sibthorpioides
Lvs cleft to petiole (not peltate), 3-12mm wide, w 5-7 similar lobes, crenate, per Weakley's Flora.
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Centella,
Centella erecta
Leaves pubescent beneath; petioles lanate to glabrescent, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Centella,
Centella erecta
Peduncles pubescent, shorter than the petioles, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Southern Chervil,
Chaerophyllum tainturieri
Petiole sheath ciliate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Heartleaf Golden-Alexanders,
Zizia aptera
Basal leaves simple, long-petioled, w cordate base; stem lvs 1- or 2-ternate, per Wildflowers of the Southern Mountains (Smith, 1998).
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Honewort,
Cryptotaenia canadensis
Upper leaves on short petioles dilated as far as the leaflets, per Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist, 1991).
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Goutweed,
Aegopodium podagraria
Leaves long-petioled, divided into leaflets
arranged in groups of three, per USDA Forest Service Weed of the Week (Northeastern Area).
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American Lovage,
Ligusticum canadense
The petioles have narrow basal sheaths, per Wildflowers of the Southern Mountains (Smith, 1998).
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Hairy Angelica,
Angelica venenosa
Upper petioles conspicuously expanded, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Mountain Angelica,
Angelica triquinata
Upper petioles conspicuously expanded, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Parsnip,
Pastinaca sativa
In the family Apiaceae, petioles are usually sheathing at their base, per Flora of China.
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Cow-parsnip,
Heracleum maximum
The sheaths of the petioles expanded to as much as 2" wide, per Wildflowers of the Southern Mountains (Smith, 1998).
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Water Tupelo,
Nyssa aquatica
Acuminate lvs, 1-2" petioles, & glabrous twig distinguish it from N. ogeche, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
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Ogeechee Tupelo,
Nyssa ogeche
Leaves similar to N. aquatica; tips rounded to blunt; petioles less than 1", per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
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Alternate-leaf Dogwood,
Swida alternifolia
Leaves are pale beneath and have long petioles, per Woody Plants of the Blue Ridge (Lance).
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Alternate-leaf Dogwood,
Swida alternifolia
Petioles to 2.5" long [alternate arrangement easier to see from underneath], per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
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Mountain Laurel,
Kalmia latifolia
Leaves 2.5-12 cm long, petiole 7-45 mm long, per Weakley's Flora.