雅江乌头 ya jiang wu tou

Caudex unknown. Stem ca. 1 m tall, apically branched, spreading pubescent. Leaf blade pentagonal, ca. 7 × 10 cm, both surfaces sparsely pubescent, 3-parted; central lobe rhombic, apex acuminate, subpinnatilobate; lateral lobes obliquely flabellate, unequally 2-fid. Compound inflorescence coniform, many flowered; rachis and pedicels densely yellowish pubescent, and intermixed shortly glandular pubescent; bracts leaflike. Pedicels 2--3.3 cm, with 2 bracteoles above middle; bracteoles leaflike. Sepals white, becoming purplish when dried, abaxially spreading pubescent; lower sepals ca. 1.2 cm; lateral sepals orbicular-obovate, ca. 1.4 cm; upper sepal galeate, ca. 2 cm high, clawed, ca. 1.5 cm from base to beak, lower margin oblique upward, concave. Petals sparsely pubescent; limb ca. 1 cm; lip and spur ca. 4 mm. Stamens glabrous; filaments entire. Carpels 5, densely yellowish pubescent. Fl. May.

* Mountains; 3100--3400 m. W Sichuan (Yajiang Xian).