倒根拳参 Bistorta ochotensis

  • Scientific Name: Bistorta ochotensis Kom.
  • Ref: Fl. URSS 5:726. 1936
  • Synonyms: Bistorta globispica Nakai, Polygonum globispicum (Nakai) C.W.Park, Polygonum ochotense Petrov
  • Chinese Common Name: 倒根拳参 dàogēn quánshēn, 倒根蓼 dàogēn∙liǎo
  • Family: Polygonaceae
  • Genus: Bistorta
  • Distribution: Mountain slopes; 1500-2500 m. Jilin [Korea, Russia (Far East)].
  • Photo: 07/14/2008, Mt. Changbai, Jilin
Herbs perennial. Rhizomes black-brown, curved, large. Stems erect, 15-40 cm tall, glabrous. Basal leaves long petiolate; petiole 6-10 cm; leaf blade green, ovate-lanceolate or oblong-lanceolate, subleathery, 5-8 × 1.5-3 cm, abaxially densely gray-white pubescent, adaxially glabrous, base rounded or subcordate, slightly decurrent along petiole, margin revolute, apex acuminate. Cauline leaves smaller; petiole short; leaf blade ovate lanceolate; upper leaves clasping; ocrea: lower part green, upper part brown, tubular, pubescent, not ciliate, cleft to middle. Inflorescence spicate, short, 2-3 cm, 1-1.5 cm in diam.; bracts brown, membranous, apex long acuminate, awned. Pedicel slender, articulate at apex. Perianth pinkish, 5-parted; tepals elliptic, 2.5-3 mm. Stamens 8, exserted; anthers purple. Styles 3, exserted, slender; stigmas capitate. Achenes included in persistent perianth, shiny, ovoid, trigonous, ca. 4 mm. Fl. Jul-Aug, fr. Aug-Sep. (Flora of China)

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