View source for Polygonum erectum

{{Treatment/ID
|accepted_name=Polygonum erectum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 363. 1753
|year=1753
}}
|common_names=Erect knotweed;renouée dressée
|basionyms=
|synonyms=
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Polygonum;Polygonum sect. Polygonum;Polygonum erectum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Polygonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Polygonum]]</div><div class="higher-taxon"><small>section</small>[[Polygonum sect. Polygonum]]</div><div class="higher-taxon"><small>species</small>[[Polygonum erectum]]</div></div>
|volume=Volume 5
|mention_page=page 549, 551
|treatment_page=page 550
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>light green or yellowish, heterophyllous. <b>Stems</b> erect to ascending, sparingly branched in distal 1/2, not wiry, 15–75 cm. <b>Leaves</b>: ocrea 7–12 mm, proximal part cylindric, distal part usually persistent, with strong veins, margins entire or lacerate, silvery, later disintegrating into ± persistent brown fibers; petiole 1–5 mm; blade light green or yellowish, elliptic to obovate, 30–60(–80) × (8–)10–25 mm, margins flat, apex obtuse; stem leaves 1.5–3.5(–4) times longer than branch leaves; distal leaves overtopping flowers in distal part of inflorescence. <b>Inflorescences</b> axillary; cymes in axils of most leaves and toward tips of stems and branchs, 1–5-flowered. <b>Pedicels</b> mostly exserted from ocreae, 3–7 mm. <b>Flowers</b> closed; perianth 2.8–3.8(–4.2) mm; tube 20–37% of perianth length; tepals overlapping, green with yellowish, rarely whitish green, margins, sepaloid, not keeled, oblong to obovate, cucullate; midveins branched, moderately to heavily thickened; stamens 7–8. <b>Achenes</b> enclosed in perianth, brown to tan, ovate, 3-gonous, 2.3–3.5 mm, faces subequal, ± concave, apex not beaked, edges concave, dull, striate-tubercled; late-season achenes uncommon, 4–5 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Oct.
|habitat=Dry, waste ground
|elevation=10-300 m
|distribution=Alta.;Ont.;Que.;Sask.;Ala.;Ark.;Colo.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.
|discussion=<p><i>Polygonum erectum</i> was cultivated in the midwest by Native Americans for its starchy seeds (C. M. Scarry 1993). It was formerly confused with <i>P. achoreum</i> (T. R. Mertens and P. H. Raven 1965).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Polygonum erectum
|authority=Linnaeus
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Polygonaceae
|phenology=Flowering May–Oct.
|habitat=Dry, waste ground
|elevation=10-300 m
|distribution=Alta.;Ont.;Que.;Sask.;Ala.;Ark.;Colo.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_1120.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Polygonum
|section=Polygonum sect. Polygonum
|species=Polygonum erectum
}}<!--

-->[[Category:Treatment]][[Category:Polygonum sect. Polygonum]]