勒公氏马先蒿 le gong shi ma xian hao

Herbs perennial, 5--12 cm tall, drying black. Roots fascicled, fusiform. Stems unbranched, rust colored villous. Leaves barely all basal; petiole 3--4 cm, pubescent; leaf blade oblong-lanceolate to linear-lanceolate, 3--5.5 cm X 6--11 mm, abaxially densely white scurfy, adaxially glabrescent, pinnatipartite; segments 10--20 pairs, ovate to long ovate, pinnatifid or incised-dentate. Inflorescences racemose, 4--5 cm; proximal bracts leaflike. Pedicel 1--1.5 cm, slender, densely rust colored villous. Calyx 1--1.5 cm, villous, slightly cleft anteriorly; lobes 5, unequal, leaflike. Corolla yellow, with purple beak, 3--3.5 cm; tube straight, 1.2--2.2 cm, glabrous; galea ± falcate apically; beak 2--2.5 mm, indistinctly marginally 1- or 2-toothed near apex; lower lip ca. 1.1 X 1.6 cm, not ciliate. Anterior filament pair densely villous. Fl. Jun--Jul, fr. Jul--Aug.

* Rocky slopes; ca. 3500 m. NW Yunnan.