Ptilimnium nodosum (Rose) Mathias
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Apiaceae
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Scientific Name
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Description
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Species Description - Slender, sparsely branched, 1–10 dm; lvs consisting of petioles only, to 35 cm, with a scarious stipular margin toward the base, sometimes with axillary bulblets; rays 3–15, 5–20 mm; bracts minute or none; pedicels 3–15, 1–6 mm; bractlets lanceolate, 1 mm; fr ovoid, 1.5–2 mm; 2n=12. Wet riverbanks and highly saturated soils; Potomac Valley of Md.; Va. and W.Va., s. to S.C., Ga., and n. Ala. July–Oct. (P. fluviatile; P. viviparum; Harperella f.; Harperella n.)
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Common Names
river-bank mock bishop's-weed, harperella