All Floras      Advanced Search
FOC Vol. 5 Page 300 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 5 | Polygonaceae | Polygonum

63. Polygonum chinense Linnaeus, Sp. Pl. 1: 363. 1753.

火炭母 huo tan mu

Herbs perennial. Rhizomes stout. Stems erect, 70-100 cm tall, ligneous at base, much branched, striate, glabrous or retrorsely hispid. Petiole 1-2 cm, usually auriculate at base, upper leaves subsessile; leaf blade ovate, elliptic, or lanceolate, 4-16 × 1.5-8 cm, both surfaces glabrous or hispid, abaxially sometimes pubescent along veins, base truncate or broadly cordate, margin entire, apex shortly acuminate; ocrea tubular, 1.5-2.5 cm, membranous, glabrous, much veined, apex oblique, not ciliate. Inflorescence terminal or axillary, capitate, 3-5 mm, usually several capitula aggregated and panicle-like; peduncle densely glandular hairy; bracts broadly ovate, each 1-3-flowered. Perianth white or pinkish, 5-parted; tepals ovate, accrescent in fruit, becoming blue-black, fleshy. Stamens 8, included. Styles 3, connate to below middle. Achenes included in persistent perianth, black, opaque, broadly ovoid, trigonous, 3-4 mm. Fl. Jul-Nov, fr. Jul-Dec. 2n = 22*.

Wet valleys, grassy slopes, mixed forests, thickets in valleys, mountain slopes; sea level to 3000 m. Anhui, Fujian, S Gansu, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, S Shaanxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, India, Indonesia, Japan, Malaysia, Myanmar, Nepal, Philippines, Sikkim, Thailand, Vietnam].

1 Leaf blade lanceolate to broadly lanceolate, 7-12 × 1.5-2.5 cm.   63c var. paradoxum
+ Leaf blade ovate to elliptic, 4-16 × 2-8 cm.   (2)
2 (1) Stems and branches retrorsely hispid; leaf blade hispid on both surfaces.   63d var. hispidum
+ Stems and branches usually glabrous; leaf blade glabrous on both surfaces, sometimes adaxially along veins sparsely pubescent.   (3)
3 (2) Leaf blade broadly ovate or elliptic, 10-16 × 2-4 cm.   63b var. ovalifolium
+ Leaf blade ovate or narrowly ovate, 4-10 × 2-4 cm.   63a var. chinense


Related Objects  
  • Illustration
  • Illustration

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |