Polygonum punctatum Elliott
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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
Polygonaceae
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Scientific Name
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Description
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Species Description - Slender annual or perennial to 1 m, simple or branched, erect or ascending; lvs narrowly lanceolate or elliptic, glabrous, to 20 × 2 cm; ocreae glabrous or strigose; racemes slender, erect or arched, to 10 cm, much interrupted, especially below, where the internodes may be 2–3 cm; fls greenish; tep 5, 2 mm; pedicels exsert 1–2 mm at maturity; achenes smooth and shining, lenticular or trigonous, 2.4–3 mm, two-thirds as wide; 2n=44. Wet soil, open swamps, and shallow water; Que. to Fla., and w. to the Pacific; also in tropical Amer. (Persicaria p.; Polygonum acre)
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Common Names
dotted smartweed