堆拉乌头 dui la wu tou

Caudex unknown. Stem ca. 40 cm, glabrous; Leaves long petiolate; petiole 8--11 cm; leaf blade orbicular-pentagonal, to 5.5 × 6 cm, both surfaces glabrous, 5-sect; central segment rhombic, ± duplicato-pinnatisect; ultimate lobes narrowly lanceolate or linear. Inflorescence ca. 7-flowered; rachis and pedicels glabrous; bracts leaflike. Pedicels to 4.5 cm, oblique upward, distally with 2 bracteoles; bracteoles pinnatifid, to 2 cm. Sepals glabrous abaxially, sparsely pubescent adaxially; upper sepal falcate-navicular, ca. 6 mm wide, ca. 1.5 from base to beak. Petals glabrous; claw geniculate at apex; lip slightly concave at apex; spur circinate. Stamens glabrous. Carpels 5, glabrous. Fl. Jul.

* Rhododendron scrub; 4200--4500 m. S Xizang (N Yadong Xian).