大籽蒿 da zi hao

Absinthium sieversianum (Ehrhart ex Willdenow) Besser; Artemisia chrysolepis Kitagawa; A. koreana Nakai; A. moxa Candolle; A. scaposa Kitagawa; A. sieversiana var. blinii H. Léveillé; A. sieversiana var. grandis Pampanini; A. sieversiana f. microcephala Pampanini; A. sieversiana f. nana Pampanini; A. sparsa Kitagawa; Carpesium gigas H. Léveillé & Vaniot.

Herbs, annual or biennial, 50-150 cm tall, gray pubescent or glabrescent. Basal and middle stem leaves: petiole (1-)2-4 cm; leaf blade broadly ovate or ovate-orbicular, 4-8(-13) × (2-)3-6(-15) cm, 2- or 3-pinnatisect or -partite, segments 2 or 3 pairs, lobules linear or linear-lanceolate, 2-10 × 1-1.5(-2) mm, rarely lacerate, apex acute or obtuse. Uppermost leaves and bracts sessile, pinnatisect or entire, leaves or lobes elliptic-lanceolate or lanceolate. Synflorescence a long, narrow panicle to 10-30 × 5-10 cm; branches ± erect, 5-10 cm, remote. Capitula many, remote, pedunculate or ± sessile, subtended by linear bracteoles. Involucre hemispheric or subglobose, (3-)4-6 mm in diam.; receptacle hemispheric, densely white pubescent. Marginal female florets 20-30 in (1 or)2 series; corolla conical, (2-)4-toothed. Disk florets 80-120, bisexual. Achenes oblong. Fl. and fr. Jun-Oct. 2n = 18.

Roadsides, waste places, steppes, hillsides, forest margins; sea level to 4200 m. Gansu, N Guizhou, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, E and W Sichuan, Xinjiang, Xizang, W Yunnan [Afghanistan, India, Japan, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; E Europe].

The essential oils from Artemisia sieversiana are used in anti-inflammatory and hemostatic medicines.