巨苞乌头 ju bao wu tou

Caudex ca. 1.6 cm in diam. Stem ca. 80 cm, base sparsely pubescent, elsewhere glabrous. Distal leaves shortly petiolate; petiole ca. 1.5 cm; leaf blade cordate-pentagonal, ca. 5 × 8 cm, papery, abaxially glabrous, adaxially sparsely appressed pubescent, 3-parted; central lobe narrowly rhombic, 3-fid; lateral lobes unequally 2-parted. Inflorescence terminal, ca. 29 cm, 14-flowered; distal rachis retrorse yellowish pubescent, elsewhere glabrous; bracts leaflike, shortly stipitate. Proximal pedicels 7--10 cm, distal ones shorter, sparsely retrorse pubescent; bracteoles 2, leaflike, 1--3.5 × 1--3.5 cm, contiguous with flower. Sepals white or bluish, abaxially appressed pubescent; lower sepals obliquely elliptic or narrowly lanceolate, 1.1--1.3 cm; lateral sepals obliquely rhombic, ca. 1.6 × 0.7 cm, abaxially sparsely villous; upper sepal galeate, with short ca. 1.2 mm beak, lower margin ca. 1.8 cm. Petals ca. 2.1 cm, pilose; claw geniculate at apex; limb ca. 1 cm; lip ca. 3 mm, 2-lobed; spur curved, ca. 1.5 mm. Stamens glabrous; filaments entire, rarely 1-denticulate. Carpels 3, appressed pubescent.

* Grassy slopes; ca. 4100 m. W Sichuan (Yanbian Xian).