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Prostrate Knotweed,
Polygonum aviculare ssp. aviculare
Sheaths [ocreae] silvery. Plant usually prostrate, sometimes erect, per Newcomb's Wildflower Guide (Newcomb, 1977).
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Queen Anne's Lace,
Daucus carota ssp. carota
Leaf stalks in the Apiaceae usually have a broad sheathing base, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
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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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Hairy-jointed Meadow-parsnip,
Thaspium barbinode
The hispid, purple-tinged leaf sheath is a useful additional [id] character for this species, per Weakley's Flora (2022).
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Hairy-jointed Meadow-parsnip,
Thaspium barbinode
The hispid, purple-tinged leaf sheath is a good [field id] character, per Weakley's Flora (2012).
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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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Mountain Angelica,
Angelica triquinata
Leaves reduced in size above: upper ones sometimes consist of only a sheath, per Wildflowers of the Southern Mountains (Smith, 1998).
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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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Poor-joe,
Hexasepalum teres
Stipules to 0.4" long have a short sheath and 5-8 bristles, per Wildflowers of Tennessee (Carman, 2005).
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White Arrowleaf Aster,
Symphyotrichum urophyllum
Basal leaves long-petiolate, petioles not or narrowly winged, sheathing, per Flora of North America.
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Savannah Grass-leaved Aster,
Eurybia paludosa
Grass-like leaves that sheath often-red stems help distinguish this species. — Will Stuart
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Early Goldenrod,
Solidago juncea
Stems glabrous or nearly so. Petiole bases of basal and lower stem leaves not sheathing the stem, per Weakley's Flora (2023).
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Granite Dome Goldenrod,
Solidago simulans
Petiole bases of basal and lower cauline leaves sheathing the stem, per Weakley's Flora (2012).