裂喙马先蒿 lie hui ma xian hao

Herbs perennial, 3--5 cm tall, glabrous, drying black or not. Stems numerous, slender, soft. Leaves mostly basal; petiole to 2 cm; leaf blade ca. 9 X 3--4 mm, pinnatisect; segments 6--8 pairs, ovate, dentate. Stem leaves few or absent, long petiolate. Inflorescences racemose, 3- or 4-flowered; bracts leaflike. Pedicel 2--3 mm. Calyx oblong, ca. 9 mm, slightly cleft anteriorly, pubescent along veins; lobes 5, unequal, serrate. Corolla tube 1.6--1.8 cm; galea falcate, ca. 1.5 cm, dilated; beak straight, ca. 3 mm, apex truncate; lower lip slightly longer than galea, ciliate. 2 filaments long pubescent, 2 glabrous. Capsule ovoid, ca. 1.1 cm X 6 mm, slightly exceeding calyx, short apiculate. Fl. Aug--Sep, fr. Sep.

Humus-clad boulders of forest understories, open hillsides; ca. 3800 m. S Xizang [Bhutan, E Nepal, Sikkim].