纤裂马先蒿 xian lie ma xian hao

Herbs perennial, 30--60 cm tall, drying black. Stems 1 to several, erect, rigid, leafy, sometimes many branched, densely pubescent. Leaves sessile, ovate-elliptic to lanceolate-oblong, 1--3 cm X 3--15 mm, pubescent on both surfaces, 1- or 2-pinnatisect; segments ca. 10 pairs, lanceolate-oblong to linear-lanceolate, pinnatipartite. Inflorescences racemose, to 20 cm, many flowered; bracts leaflike, longer than calyx, shorter than flowers. Pedicel barely 1 mm. Calyx ovoid, 6--9 mm, deeply cleft anteriorly, sparsely pubescent; lobes 5, serrate. Corolla purple-red, 1.5--2.4 cm; tube slightly bent basally, ca. 2 X as long as calyx tube, expanded apically; galea curved at middle, apex obtuse or truncate; beak obscure; lower lip shorter than galea, to 1.1 cm. Filaments sparsely villous. Capsule obliquely lanceolate-ovoid, ca. 1.1 cm X 4.5 mm. Fl. Aug--Sep, fr. Sep--Nov.

Alpine meadows in coniferous forests; 1500--3700 m. W Guizhou, SW Sichuan, NW Yunnan [Laos].