View source for Polygonum argyrocoleon

{{Treatment/ID
|accepted_name=Polygonum argyrocoleon
|accepted_authority=Steudel ex Kunze
|publications={{Treatment/Publication
|title=Linnaea
|place=20: 17. 1847
|year=1847
}}
|common_names=Persian or silversheath knotweed
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Polygonum;Polygonum sect. Polygonum;Polygonum argyrocoleon
|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 argyrocoleon]]</div></div>
|volume=Volume 5
|mention_page=page 549
|treatment_page=page 560
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>green, heterophyllous. <b>Stems</b> erect or decumbent, branched mostly from base, not wiry, 15–100 cm. <b>Leaves</b>: ocrea 4–8 mm, proximal part cylindric, distal part soon disintegrating into curly or straight fibers; petiole 0–1.5 mm; blade bluish green, lanceolate or linear-lanceolate, 15–50 × 2–8 mm, margins flat, apex acute; stem leaves 2.1–4 times as long as branch leaves; distal leaves abruptly reduced and not overtopping flowers (shorter than or equaling flowers). <b>Inflorescence</b> axillary and terminal, spikelike; cymes aggregated at tips of stems and branches, 4–6-flowered, bracts inconspicuous. <b>Pedicels</b> enclosed in ocreae, 1–2 mm. <b>Flowers</b> closed; perianth 1.8–2.4 mm; tube 10–22% of perianth length; tepals overlapping, green or white, usually with pink, rarely red or white, margins, petaloid, not keeled, oblong to obovate, cucullate; midveins usually unbranched; stamens 7–8. <b>Achenes</b> enclosed in perianth, brown, ovate, 3-gonous, 1.3–2.3 mm, faces subequal, slightly concave, apex not beaked, with concave edges, shiny, smooth; late-season achenes unknown.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Oct.
|habitat=Fields, gardens, disturbed sites, often in saline soils
|elevation=0-1200 m
|distribution=Ariz.;Calif.;Colo.;Fla.;Idaho;La.;Mass.;Mo.;Nev.;N.Mex.;N.C.;Tex.;Utah;Vt.;W.Va.;c Asia.
|introduced=true
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Polygonum argyrocoleon
|authority=Steudel ex Kunze
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Polygonaceae
|phenology=Flowering May–Oct.
|habitat=Fields, gardens, disturbed sites, often in saline soils
|elevation=0-1200 m
|distribution=Ariz.;Calif.;Colo.;Fla.;Idaho;La.;Mass.;Mo.;Nev.;N.Mex.;N.C.;Tex.;Utah;Vt.;W.Va.;c Asia.
|introduced=true
|reference=None
|publication title=Linnaea
|publication year=1847
|special status=Weedy;Introduced
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_1144.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Polygonum
|section=Polygonum sect. Polygonum
|species=Polygonum argyrocoleon
}}<!--

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