短盔马先蒿 duan kuen ma xian hao

Herbs biennial or perennial, to 30 cm tall. Roots single, small, not fleshy, slightly robust. Stems numerous, erect, slender, unbranched, glabrous or pilose, internode to 12 cm. Basal leaf petiole 1.5--2 cm. Stem leaves in whorls of 3 or 4; petiole 2--7 mm; leaf blade ovate-oblong, ca. 2.5 X 1.3 cm, membranous, glabrous, pinnatisect or -partite; segments 5 or 6 pairs, ovate-oblong, pinnatifid. Inflorescences racemose, to 10 cm, interrupted basally; bracts ovate-oblong or oblong-lanceolate, pinnatisect or pinnatifid. Pedicel 2--3 mm. Calyx broadly ovate, ca. 4 mm, slightly cleft anteriorly, pilose; lobes 5, ± equal, triangular, barely 1 mm, entire or obscurely serrate. Corolla purple, ca. 1.6 cm, glabrous throughout; tube decurved in calyx, erect apically, 8--9 mm; galea ± erect, 3.5--4 mm, rounded in front, margin entire, apex truncate; lower lip 7--8 mm, lobes rounded, margin entire, middle lobe smaller than lateral pair, placed apically. Filaments glabrous. Fl. May.

* Near glacial lakes. SW Sichuan, NW Yunnan.