掌裂蒿 zhang lie hao

Oligosporus kuschakewiczii (C. Winkler) Poljakov.

Herbs, perennial, 5-12(-15) cm tall, with a thick rootstock, white sericeous-pubescent or glabrescent. Lower and middle stem leaves: leaf blade suborbicular or ovate, 5-25 × 5-25 mm, subpalmately 5-7-partite; lobes not or rarely (2 or)3-5-lobuled; lobes or lobules linear-lanceolate, 2-5 × 1-2 mm. Uppermost leaves 3-5-partite; leaflike bracts linear. Synflorescence a spikelike or racemelike panicle. Involucre ovoid, 2.5-3 mm in diam.; phyllaries white or yellowish sericeous-puberulent. Marginal female florets 5 or 6. Disk florets 9-12, male. Achenes obovoid. Fl. and fr. Aug-Oct.

Lakeshores, riverbanks, slopes; 3500-4000 m. Xinjiang, W Xizang [Tajikistan].