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Dwarf Filmy-fern,
Didymoglossum petersii
Leaves elliptic to oblanceolate, simple; petioles nearly as long as blades, per Flora of North America.
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Hairy Lipfern,
Myriopteris lanosa
Petiole & rachis with hairs only (vs. M. tomentosa with a mixture of flattened scales and hairs), per Weakley's Flora (2022).
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Wright's Cliffbrake,
Pellaea wrightiana
Petiole dark brown, lustrous. Ultimate segments 5-20mm [in length], per Flora of North America.
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Arizona Cliffbrake,
Pellaea ternifolia ssp. arizonica
Basal pinnae of 3 incompletely divided segments. Petiole dk purple to black, per The Ferns and Lycophytes of Texas (Diggs & Lipscomb, 2014).
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Wavy Cloak Fern,
Astrolepis sinuata ssp. sinuata
Pinnae alternate, oblong with short petioles, cut 1/3 to 1/2 way to midvein, per Field Guide to the Ferns and Other Pteridophytes of Georgia (Snyder & Bruce, 1986).
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Southern Lady Fern,
Athyrium asplenioides
Petioles as long as blade, reddish or light green. Blade widest @ 2nd pinna, per Ferns of the Smokies (Evans, 2005).
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Mariana Maiden-fern,
Macrothelypteris torresiana
Petiole in cross section, after a day drying in the plant press.
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Mariana Maiden-fern,
Macrothelypteris torresiana
Petiole in cross section with 2 crescent-shaped vascular bundles at base, per Flora of North America.
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Maidenhair Spleenwort,
Asplenium trichomanes
Petiole and rachis reddish-brown or blackish-brown, shiny, per The Ferns and Lycophytes of Texas (Diggs & Lipscomb, 2014).
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Dwarf Waterclover,
Marsilea minuta
Leaves clover-like, the 4 leaflets borne at the summit of the petiole, per Weakley's Flora (2015).
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Sago-palm,
Cycas revoluta
Petiole subtetragonal in cross section, 10-20cm, 6-18 spines along each side, per Flora of China.
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Florida Torreya,
Torreya taxifolia
Leaves stiff with a short petiole-like constriction, often slightly curved, per Trees of the Southeastern United States (Duncan & Duncan, 1988).
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Creeping Burhead,
Echinodorus cordifolius
Basal leaves with long petioles & heart-shaped blades 1.2-6" wide, 2-8" long, per Wildflowers of Tennessee (Carman, 2005).
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Creeping Burhead,
Echinodorus cordifolius
Leaves clustered, erect and rising above water surface on long, 3-sided petioles, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
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American Eelgrass,
Vallisneria americana
Leaves straplike, elongate, linear, not differentiated into petiole and blade, per Weakley's Flora.
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Saw Palmetto,
Serenoa repens
Stem horizontal, atop or just below soil surface. Petioles often w prickles, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Saw Palmetto,
Serenoa repens
The petiole is armed with stiff spines, per Trees of the Southeastern United States (Duncan & Duncan, 1988).
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Saw Palmetto,
Serenoa repens
Petiole ends abruptly in the blade base, per Trees of the Southeastern United States (Duncan & Duncan, 1988).
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Dwarf Palmetto,
Sabal minor
Petiole unarmed, per Trees of the Southeastern United States (Duncan & Duncan, 1988).
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Dwarf Palmetto,
Sabal minor
Stem below ground (rarely emerging). Petioles long and 3-angled, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Needle Palm,
Rhapidophyllum hystrix
Leaves fan-shaped, segments faintly corrugated; petioles 3-angled, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Needle Palm,
Rhapidophyllum hystrix
Sharp spines project from petiole base, from stolons, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Pindo Palm,
Butia odorata
The petioles are armed with curved spines (vs. those of Cocos unarmed), per Weakley's Flora (2015).
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Coconut Palm,
Cocos nucifera
Petiole unarmed (vs. that of Butia and Phoenix with petiolar spines), per Weakley's Flora (2015).
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Green Dragon,
Pinellia tripartita
Each upright leaf petiole is terminated by a single trifoliate green leaf, per www.missouribotanicalgarden.org.
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Elephant's-ear,
Colocasia esculenta
Leaves are held on 3' long petioles that attach in the center of the leaf, per Invasive Plants, Guide to Identification, Impacts and Control (Kaufman & Kaufman, 2007).
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Common Carrionflower,
Smilax herbacea
Peduncles 5-8x long as the subtending petioles, per Weakley's Flora.
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Fringed Greenbrier,
Smilax bona-nox var. bona-nox
Stalk of the umbel > 1.5x as long as the subtending leaf petiole, per Weakley's Flora (2012).
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Coral Greenbrier,
Smilax walteri
Leaves often with a red mid-vein and petiole; berries bright red, per Weakley's Flora (2022).
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Prairie Trillium,
Trillium recurvatum
Sepals become sharply recurved and extend downward between petioles, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
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Painted Trillium,
Trillidium undulatum
Leaves are clearly petioled and acuminate, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
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Painted Trillium,
Trillidium undulatum
Petioles 3-20 mm long; pedicels 1.5-5.8 cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Downy Solomon’s Seal,
Polygonatum pubescens
Leaves narrowly elliptical to oval, short-petioled, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
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Red Ramps,
Allium tricoccum
Leaves usually absent at anthesis, blade tapering to long, slender petiole, per Flora of North America.
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Red Ramps,
Allium tricoccum
2 glaucous leaves, with petioles 2-7cm long, are present from April into June, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Upland Willow,
Salix humilis
Leaves pale and veiny below, margin slightly revolute, petioles hairy, per Woody Plants of the Blue Ridge (Lance).
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Common Shagbark Hickory,
Carya ovata
Crushed lvs w faint apple smell unlike other hickories. Petioles pubescent, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
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Red Hickory,
Carya ovalis
Leaves with (5-)7 leaflets, pubescent beneath; petiole reddish, per Weakley's Flora.
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Red Hickory,
Carya ovalis
Petiole reddish, per Weakley's Flora.
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Black Hickory,
Carya texana
Only hickory w tufted rust-colored hair on buds, petioles, leaf undersides, per Trees of the Southeastern United States (Duncan & Duncan, 1988).
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American Hazelnut,
Corylus americana
Petioles pubescent and glandular pubescent, 0.2-1.8cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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American Hazelnut,
Corylus americana
Young twigs and petioles stipitate-glandular (vs. C. cornuta's glandless), per Weakley's Flora (2015).
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Common Chinquapin,
Castanea pumila
Fruit husk spines and leaf petioles are usually less than 1cm long, per Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004).
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Rock Chestnut Oak,
Quercus montana
Yellow petiole 10-32mm long, per Field Guide to Native Oak Species of Eastern North America (Stein, Binion, & Acciavatti, 2003).
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Dwarf Live Oak,
Quercus minima
Leaves obovate or oblanceolate, with a very short petiole, base cuneate, per Field Guide to Native Oak Species of Eastern North America (Stein, Binion, & Acciavatti, 2003).
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Winged Elm,
Ulmus alata
Petioles usually 1-2mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Wych Elm,
Ulmus glabra
Leaf base strongly oblique, lowermost lobe overlapping, covering petiole, per Flora of North America.
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Paper Mulberry,
Broussonetia papyrifera
Twigs & petioles have long, spreading, glassily transparent hairs, per Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007).
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Mulberry-weed,
Fatoua villosa
Alternate, ovate leaves with cordate bases, borne on long petioles (about as long as leaf blade), per Weakley's Flora (2022).
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Japanese Hops,
Humulus scandens
Leaves are rough to the touch & occur on long petioles up to 8" in length, per Invasive Exotic Plants of North Carolina (Smith, 2008).
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European Stinging Nettle,
Urtica dioica ssp. dioica
Inflorescences usually surpassing the subtending leaf petiole, per Weakley's Flora.
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Common Wild Ginger,
Asarum canadense
Leaves pubescent, petioles villous, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Common Wild Ginger,
Asarum canadense
Each plant has 2 kidney-shaped leaves with cordate bases, on long petioles, per Wildflowers of the Southern Mountains (Smith, 1998).
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Reflexed Wild Ginger,
Asarum reflexum
Flower solitary, arising between the petioles. Petioles villous, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Sheep Sorrel,
Acetosa acetosella
Well-developed leaves with sagittate base (the lobes pointing downward, ~ parallel to petiole), per Weakley's Flora (2022).
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Wild Dock,
Acetosa hastatula
Well-developed leaves with hastate base (the lobes divergent, at right angle to the petiole), per Weakley's Flora (2022).
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Longbristle Smartweed,
Persicaria longiseta
Base of leaf is cuneate, petiole 1-5 mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Asiatic Tearthumb,
Persicaria perfoliata
Stem, petioles, lower surface of major leaf veins w abundant recurved prickles, per Weakley's Flora.
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Smooth Pigweed,
Amaranthus hybridus ssp. hybridus
Blade ovate, rhombic-ovate, or lanceolate; petiole half or as long as blade, per Flora of North America.
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Spring-beauty,
Claytonia virginica var. virginica
Leaves 3" long or more, narrow and long-tapering without an evident petiole, per Wildflowers of the Southern Mountains (Smith, 1998).