狭叶牡蒿 xia ye mu hao

Artemisia japonica Thunberg subf. angustissima (Nakai) Pampanini; A. japonica var. angustissima (Nakai) Kitamura.

Herbs, perennial, 20-60 cm tall, stems few, slender and erect, branching from upper nodes, sparsely arachnoid pilose, ± glabrescent. Lower and middle stem leaves ± sessile; leaf blade ovate or suborbicular in outline, 1.5-2.2 × 1.5-2.2 cm, (1 or)2-pinnatisect; segments 2(or 3) pairs, 5-10 × 3-5 mm, partite or few serrate. Middle stem leaves pinnatisect; lobes linear or narrowly linear-lanceolate, 5-8(-10) × 0.8-3 mm, entire or few serrate. Uppermost leaves and leaflike bracts 3-sect or entire. Synflorescence a narrow panicle. Capitula shortly pedunculate or sessile, nodding. Involucre ovoid or subglobose, 1-1.5 mm in diam. Marginal female florets 2 or 3. Disk florets 2-5, male. Achenes obovoid. Fl. and fr. Aug-Oct.

Slopes, roadsides; low elevations to 500 m. S Gansu, Hebei, SE Heilongjiang, Henan, Jiangsu, Jilin, Liaoning, S Shaanxi, Shandong, Shanxi [Korea].