Polygonum lapathifolium L.
-
Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
-
Family
Polygonaceae
-
Scientific Name
-
Description
Species Description - Erect annual to 15 dm, or occasionally prostrate; lvs variable, commonly lanceolate and acuminate, often tomentose beneath; ocreae entire or merely lacerate, not fringed-ciliate; summit of the peduncle and axis of the infl glabrous to densely glandular; racemes numerous, nodding, 1–5 cm; ocreolae ovate; perianth rose, white, or green, 3–4 mm at maturity, 4(5)-lobed to below the middle, the outer lobes becoming obovate, strongly 3-nerved, each nerve divided at the summit into 2 recurved branches; achene lenticular, flat or concave on both sides, 1.7–3.2 mm, 75–90% as wide; 2n=22. Probably both native and intr., chiefly in moist soil, nearly throughout temperate N. Amer., and in the Old World. (P. scabrum; P. tomentosum)
-
Common Names
dock-leaved smartweed