线叶蒿 xian ye hao

Artemisia integrifolia Linnaeus var. subulata (Nakai) Pampanini; A. stenophylla Kitamura, p.p.

Herbs, perennial, 45-80 cm tall, arachnoid pubescent or glabrescent, with capitate branches. Leaves sessile. Lowermost leaves oblanceolate or oblanceolate-linear, 8-13 × 0.5-0.8 cm, entire or 1- or 2-serrate. Middle stem leaves: blade linear, linear-lanceolate, or falcate, 5-10 × 0.3-0.6 mm, abaxially densely arachnoid tomentose, margin entire or occasionally 1- or 2-serrate, apex obtuse. Uppermost leaves and leaflike bracts linear. Synflorescence a narrow, racemelike panicle. Involucre oblong or ovoid-oblong, 2-3 mm in diam. Marginal female florets 10 or 11. Disk florets 10-15, bisexual. Achenes oblong-ovoid or ellipsoid. Fl. and fr. Aug-Oct.

Humid and semihumid slopes, forest margins, riverbanks, meadows; low elevations. N Hebei, Heilongjiang, Jilin, Liaoning, E and SE Nei Mongol, N Shanxi [Japan, Korea, E Russia].