具齿马先蒿 ju chi ma xian hao

Herbs 2.5--6 cm tall. Rhizomes creeping, 5--7 cm. Stems minutely pubescent. Basal leaves withering early; petiole 2.5--3 cm. Stem leaf petiole 5--10 mm; leaf blade ovate, 2--3 X 2--2.5 cm, pinnatipartite or pinnatisect; segments 3--5 pairs, pinnatifid, dentate. Flowers axillary. Pedicel 2--4 mm. Calyx cylindric-campanulate, ca. 7 mm, slightly cleft anteriorly; lobes 5, unequal, entire. Corolla tube ca. 1.3 cm, slightly expanded apically; galea falcate, ca. 1 cm, with 1 pair of triangular marginal teeth; beak straight, ca. 3.5 mm, slender; lower lip ca. 1.1 cm, wide, lobes ovate, middle lobe ca. 1/2 as long as lateral lobes. Filaments pubescent, anterior filaments more densely so.

S Xizang [Sikkim].