变色马先蒿 bian se ma xian hao

Herbs perennial, less than 15 cm tall. Stems numerous, cespitose, diffuse or erect, unbranched, pubescent. Leaves basal and on stem, alternate; petiole to 2.5(--6.5) cm, pubescent; leaf blade oblong-ovate or oblong, to 4 X 1.4 cm, scabrous pubescent on both surfaces, pinnatisect; segments 9--12 pairs, ovate, dentate. Flowers axillary, ± sessile. Calyx campanulate, 7--9 mm, enlarged apically, to 6 mm wide, sparsely long pubescent, deeply cleft anteriorly; lobes 3, unequal, lateral pair larger, margin double dentate. Corolla white, with purple galea; tube erect, 3.5--4.5 cm, usually sparsely pubescent; galea strongly twisted, glandular pubescent, inconspicuously crested; beak S-shaped, 9--10 mm; lower lip 8--9 mm X 1.8--1.9 cm, minutely ciliate, middle lobe ca. 1/3 as long as lateral lobes or smaller, entire, truncate or rounded. Anterior filament pair sparsely pubescent apically. Fl. Aug, fr. Sep.

* Swampy meadows; 4100--4200 m. SW Sichuan, Yunnan.