Description
provided by eFloras
Herbs annual. Stems erect or ascending, 30-90 cm tall, angulate, with recurved prickles, rooting at nodes in lower part. Petiole 2-5 cm, retrorsely prickly; leaf blade hastate, both surfaces sparsely bristly, rarely stellate hairy, base subcordate or truncate, margin shortly ciliate, middle lobe ovate to broadly ovate, apex acuminate, basal lobes smaller, apex acute or obtuse; ocrea tubular, short, membranous, usually apex with green herbaceous wing, margin entire or crenate, shortly ciliate. Inflorescence capitate; peduncle branched, pubescent below, glandular hairy in upper part; bracts lanceolate, margin ciliate, each 3- or 4-flowered. Pedicels shorter than bracts, glabrous. Perianth pinkish or white, 5-parted; tepals elliptic, 3-4 mm, apex obtuse. Stamens 8, in 2 whorls, included. Styles 3, connate to below middle; stigmas capitate. Achenes included in persistent perianth, yellow-brown, opaque, broadly ovoid, trigonous, 3-3.5 mm. Fl. Jul-Sep, fr. Aug-Oct. 2n = 40*.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, ?Hainan, Hebei, Heilongjiang, Henan, Hubei, Hunan, ?Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, ?Xizang, Yunnan, Zhejiang [Japan, Korea, Russia (Far East)].
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Wet valleys, grassy slopes; 100-2400 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Polygonum arifolium Thunberg, Fl. Jap. 168. 1784, not Linnaeus (1753); Helxine arifolia Rafinesque; Persicaria sinica Migo; P. thunbergii (Siebold & Zuccarini) H. Gross; P. thunbergii var. stolonifera (F. Schmidt) H. Gross ex Nakai; Polygonum hastatotrilobum Meisner; P. pteropus Hance; P. sinicum (Migo) Fang & Zheng; P. stellatotomentosum W. W. Smith & Ramas.; P. stoloniferum F. Schmidt; P. thunbergii var. stoloniferum (F. Schmidt) Makino; Tracaulon thunbergii (Siebold & Zuccarini) Greene; Truellum thunbergii (Siebold & Zuccarini) Soják.
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- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA