Difference between revisions of "Persicaria longiseta"
Rep. Inst. Sci. Res. Manchoukuo 1: 322. 1937.
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|common_names=Bristly lady’s-thumb | |common_names=Bristly lady’s-thumb | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=I | ||
| + | |label=Introduced | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Polygonum longisetum | |name=Polygonum longisetum | ||
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|elevation=0-300 m | |elevation=0-300 m | ||
|distribution=B.C.;N.B.;Ont.;Ala.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.Y.;N.C.;Ohio;Pa.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;e Asia;introduced also in Europe. | |distribution=B.C.;N.B.;Ont.;Ala.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.J.;N.Y.;N.C.;Ohio;Pa.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;e Asia;introduced also in Europe. | ||
| + | |introduced=true | ||
|discussion=<p><i>Persicaria longiseta</i> is morphologically similar to another Asian species, P. posumbu (Buchanan-Hamilton ex D. Don) H. Gross (= P. caespitosa). Its spread in the United States since its introduction near Philadelphia in 1910 was summarized by A. K. Paterson (2000).</p> | |discussion=<p><i>Persicaria longiseta</i> is morphologically similar to another Asian species, P. posumbu (Buchanan-Hamilton ex D. Don) H. Gross (= P. caespitosa). Its spread in the United States since its introduction near Philadelphia in 1910 was summarized by A. K. Paterson (2000).</p> | ||
|tables= | |tables= | ||
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|publication title=Rep. Inst. Sci. Res. Manchoukuo | |publication title=Rep. Inst. Sci. Res. Manchoukuo | ||
|publication year=1937 | |publication year=1937 | ||
| − | |special status= | + | |special status=Introduced |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_1206.xml |
|subfamily=Polygonaceae subfam. Polygonoideae | |subfamily=Polygonaceae subfam. Polygonoideae | ||
|genus=Persicaria | |genus=Persicaria | ||
Latest revision as of 22:08, 5 November 2020
Plants annual, 3–8 dm; roots also often arising from proximal nodes; rhizomes and stolons absent. Stems decumbent to ascending, branched, without noticeable ribs, glabrous. Leaves: ocrea hyaline to brownish, cylindric, 5–12 mm, chartaceous, base sometimes inflated, margins truncate, ciliate with bristles 4–12 mm, surface glabrous or strigose, not glandular-punctate; petiole 0.1–0.3(–0.6) cm, glabrous, leaves sometimes sessile; blade without dark triangular or lunate blotch adaxially, ovate-lanceolate to linear-lanceolate, 2–8 × 1–3 cm, base tapering to cuneate, margins antrorsely strigose, apex acute to acuminate, faces glabrous or sparingly strigose along veins abaxially, glabrous or strigose along midvein and margins adaxially, not glandular-punctate. Inflorescences terminal, sometimes also axillary, erect, uninterrupted, 10–40(–80) × 3–7 mm; peduncle 10–50 mm, glabrous; ocreolae overlapping, margins ciliate with bristles (0.5–)1–4(–6) mm. Pedicels ascending, 1–2 mm. Flowers 1–5 per ocreate fascicle, homostylous; perianth pinkish green proximally, roseate distally, glabrous, not glandular-punctate, scarcely accrescent; tepals 5, connate ca. 1/3 their length, obovate, 2.2–2.8 mm, veins not prominent, not anchor-shaped, margins entire, apex obtuse to rounded; stamens 5, included; anthers yellow, elliptic to ovate; styles 3, connate proximally. Achenes included, dark brown to black, 3-gonous, 1.6–2.3 × 1.1–1.6 mm, shiny, smooth.
Phenology: Flowering May–Oct.
Habitat: Floodplain forests and woodlands, shorelines of ponds, moist roadsides, waste places
Elevation: 0-300 m
Distribution
Introduced; B.C., N.B., Ont., Ala., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Pa., S.C., Tenn., Tex., Vt., Va., W.Va., Wis., e Asia, introduced also in Europe.
Discussion
Persicaria longiseta is morphologically similar to another Asian species, P. posumbu (Buchanan-Hamilton ex D. Don) H. Gross (= P. caespitosa). Its spread in the United States since its introduction near Philadelphia in 1910 was summarized by A. K. Paterson (2000).
Selected References
None.