Difference between revisions of "Polygonum aviculare subsp. aviculare"
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Polygonum aviculare subsp. aviculare | |accepted_name=Polygonum aviculare subsp. aviculare | ||
| − | |accepted_authority= | + | |accepted_authority= |
|publications= | |publications= | ||
|common_names=Common knotweed | |common_names=Common knotweed | ||
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|name=Polygonum aviculare var. eximium | |name=Polygonum aviculare var. eximium | ||
|authority=(Lindman) Ascherson & Graebner | |authority=(Lindman) Ascherson & Graebner | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Polygonum aviculare subsp. heterophyllum | |name=Polygonum aviculare subsp. heterophyllum | ||
|authority=(Thiébaut-de-Berneaud ex Persoon) Arcangeli | |authority=(Thiébaut-de-Berneaud ex Persoon) Arcangeli | ||
| + | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Polygonum aviculare subsp. monspeliense | |name=Polygonum aviculare subsp. monspeliense | ||
| − | |authority= | + | |authority= |
| + | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Polygonum aviculare var. vegetum | |name=Polygonum aviculare var. vegetum | ||
|authority=Ledebour | |authority=Ledebour | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Polygonum heterophyllum | |name=Polygonum heterophyllum | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Polygonum monspeliense | |name=Polygonum monspeliense | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Polygonum;Polygonum sect. Polygonum;Polygonum aviculare;Polygonum aviculare subsp. aviculare | |hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Polygonum;Polygonum sect. Polygonum;Polygonum aviculare;Polygonum aviculare subsp. aviculare | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Polygonum aviculare subsp. aviculare | name=Polygonum aviculare subsp. aviculare | ||
| − | + | |authority= | |
| − | |authority= | ||
|rank=subspecies | |rank=subspecies | ||
|parent rank=species | |parent rank=species | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_1137.xml |
|subfamily=Polygonaceae subfam. Polygonoideae | |subfamily=Polygonaceae subfam. Polygonoideae | ||
|genus=Polygonum | |genus=Polygonum | ||
Revision as of 21:50, 16 December 2019
Plants green, heterophyllous (often lacking larger proximal stem leaves at maturity). Stems 1–3, ascending or erect, sometimes decumbent, basal branches divaricate, (10–)25–75(–100) cm. Leaves: ocrea (5.5–)6–10(–14) mm, proximal part cylindric, distal part silvery, hyaline, soon lacerate and disintegrating into fibers; petiole 1–6(–8) mm; blade green, lateral veins visible but not raised abaxially, elliptic to oblanceolate, 18–50(–60) × (6–)10–20 mm, 2–4.5 times as long as wide, apex acute or obtuse; stem leaves 1.4–4 times as long as branch leaves. Cymes aggregated at tips of stems and branches, 3–8-flowered. Pedicels mostly exserted from ocreae, 2–5 mm. Flowers: perianth (2.3–)2.8–4.7(–5) mm, 1.8–2.8 times as long as wide; tube (15–)20–37% of perianth length; tepals overlapping, green with pink, red, or white margins, oblong, flat (cucullate in fruit), outer tepals not pouched at base; veins branched, thickened; stamens 7–8. Achenes enclosed in or barely exserted from perianth, brown to dark brown, ovate, 3-gonous, (2.1–)2.7–3.7 mm, faces subequal, concave, apex straight, striate-tubercled; late-season achenes uncommon, 3.5–5 mm. 2n = 40, 60.
Phenology: Flowering May–Oct.
Habitat: Fields, uncultivated areas, waste places, roadsides
Elevation: 0-3500 m
Distribution
St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., La., Maine, Md., Mass., Mich., Minn., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., Wyo., Eurasia.
Discussion
Selected References
None.