View source for Polygonum tenue

{{Treatment/ID
|accepted_name=Polygonum tenue
|accepted_authority=Michaux
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=1: 238. 1803
|year=1803
}}
|common_names=Slender or pleat-leaf knotweed
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Polygonum tenue var. protrusum
|authority=Fernald
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Polygonum;Polygonum sect. Duravia;Polygonum tenue
|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. Duravia]]</div><div class="higher-taxon"><small>species</small>[[Polygonum tenue]]</div></div>
|volume=Volume 5
|mention_page=page 562
|treatment_page=page 567
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs.</b> Stems erect, green or brown-ish, simple or branched from below middle, not wiry, 5–50 cm, glabrous or papillose-scabridulous. <b>Leaves</b> uniformly distributed, articulated to ocreae, basal leaves caducous or persistent, distal leaves abruptly reduced to bracts; ocrea 6–15 mm, glabrous or papillose-scabridulous, proximal part cylindric, distal part soon disintegrating into a few brown fibers; petiole 0.1–1 mm; blade 1-veined, with 1 pleat on each side of midrib, narrowly lanceolate to linear, 25–40 × 1–8 mm, margins usually flat, papillose-denticulate, apex mucronate or cuspidate. <b>Inflorescences</b> axillary and terminal, spikelike, slender, elongate; cymes spaced along branches, 1–2(–3)-flowered. <b>Pedicels</b> enclosed in ocreae, erect, 1–1.5 mm. <b>Flowers</b> closed; perianth 2.5–4.2 mm; tube 15–22% of perianth length; tepals overlapping, green, often brownish when dried, with pink or white margins, petaloid or sepaloid, elliptic, cucullate, navicular, apex rounded; midveins usually unbranched, rarely branched; stamens 8. <b>Achenes</b> enclosed in or slightly exserted from perianth, black, elliptic to oblong, 2.3–4 mm, faces subequal, shiny, smooth or minutely striate-tubercled near edges and apex. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Oct.
|habitat=Dry acid soils in exposed sites
|elevation=100-1000 m
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Wyo.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Polygonum tenue
|author=
|authority=Michaux
|rank=species
|parent rank=section
|synonyms=Polygonum tenue var. protrusum
|basionyms=
|family=Polygonaceae
|phenology=Flowering Jun–Oct.
|habitat=Dry acid soils in exposed sites
|elevation=100-1000 m
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;D.C.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Wyo.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1803
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V5/V5_1159.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Polygonum
|section=Polygonum sect. Duravia
|species=Polygonum tenue
}}<!--

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