五角马先蒿 wu jiao ma xian hao

Herbs perennial, to 20 cm tall. Roots fleshy. Stems erect, branched apically or unbranched, pubescent. Leaves opposite; petiole ca. 1.3 cm, winged; leaf blade lanceolate, ca. 2 X 1.5 cm, glabrous, sometimes ciliolate, pinnatisect; segments widely spaced, linear, deeply dentate. Inflorescences to 9 cm. Flowers opposite; bracts leaflike basally, long ovate apically, ciliate. Calyx long ovate, membranous, to 1.5 cm, ciliate along veins; lobes 5, unequal, triangular, entire. Corolla pink to purple, to 2.5 cm; tube ca. 2 X as long as calyx tube; galea erect, rounded apically, beakless; margin of lower lip fimbriate. Filaments pubescent. Capsule enclosed by accrescent calyx tube, ovoid, compressed, apiculate. Fl. Jul--Aug, fr. Aug--Sep.

* Dry slopes, moist shaded banks in valleys; 2800--3300 m. SW Sichuan, E Xizang, NW Yunnan.