倒根拳参 dao gen quan shen

Bistorta ochotensis (V. Petrov ex Komarov) Komarov; Polygonum bistorta Linnaeus subsp. ochotense (V. Petrov ex Komarov) V. N. Voroschilov.

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.

Mountain slopes; 1500-2500 m. Jilin [Korea, Russia (Far East)].