垫型蒿 dian xing hao

Artemisia sieversiana Ehrhart ex Willdenow var. tibetica C. B. Clarke; A. tibetica (C. B. Clarke) J. D. Hooker & Thomson.

Herbs or dwarf subshrubs, caespitose, 10-15 cm tall, with horizontally creeping thick woody rootstock and branches, stems covered with broad dry leaf bases, most parts densely gray or yellowish silky-villous. Basal and middle stem leaves: petiole 0.4-0.8 cm; leaf blade suborbicular, flabellate, or reniform, (0.4-)0.6-1.2 × 0.5-1 cm, 2-pinnatisect; segments in 2(or 3) pairs, narrowly oblanceolate, 3-5-lobulate; lobules linear or linear-lanceolate, 1-2 × 0.5-1 mm, apex obtuse. Uppermost leaves and leaflike bracts minute, pinnatisect or 3-lobed or entire. Synflorescence spikelike or racemelike. Capitula usually 6-9, subsessile, remote, secund. Involucre hemispheric or subglobose, (3-)5-10 mm in diam.; outer phyllaries sparsely hairy, scarious margin broad, lacerate, purple or dark brown, apex acute; receptacle hemispheric, pubescent. Florets many, all fertile. Marginal female florets 10-18, (2 or)3- or 4-toothed. Disk florets 50-80, bisexual; corolla limb purple. Achenes brown, obovoid, ca. 0.8 mm. Fl. and fr. Jul-Oct.

Slopes, canyons, peaks, shores of salt lakes, saline soils, rocky grasslands, waysides; 3000-5800 m. W Gansu, W Qinghai, S Xinjiang, Xizang [N India, N Pakistan; SW Asia (Iran)].