同戛乌头 tong jia wu tou

Caudex carrot-shaped, 5--8 cm, 0.7--1.3 cm in diam. Stem ca. 85 cm, simple, glabrous. Proximal cauline leaves withered at anthesis, middle leaves long petiolate; petiole ca. 7 cm, glabrous; leaf blade cordate-pentagonal, ca. 7 × 8 cm, 3-sect; central segment broadly rhombic, subpinnatifid, ultimate lobes narrowly ovate or narrowly triangular; lateral segments obliquely flabellate, unequally 2-parted. Inflorescence ca. 18 cm, ca. 10-flowered; rachis and pedicels densely spreading yellow pubescent; proximal bracts leaflike, others ovate, ca. 8 mm. Pedicels suberect upward, 1.5--3.5 cm, with 2 bracteoles at middle; bracteoles ovate or broadly ovate, ca. 5.5 × 4 mm, apex rounded; lower sepals ca. 1.2 cm; lateral sepals broadly obovate, ca. 1.3 cm; upper sepal galeate, ca. 2 cm high, ca. 1.5 cm from base to beak. Petals glabrous; lip slightly concave at apex; spur incurved, short. Stamens glabrous; filaments entire. Carpels 5, yellow pubescent. Follicles 1.2--1.4 cm. Seeds triquetrous, 2.5--3 mm. Fl. Aug.

On slopes; 3200--4000 m. S Xizang (Cona Xian) [Bhutan].