疏叶乌头 shu ye wu tou

Caudex unknown. Stem 30--35 cm, simple, basally glabrous, apically sparsely retrorse pubescent. Basal leaf 1, and proximal cauline leaves withered at anthesis; middle ones long petiolate; petiole 3--5 cm, distal leaves shortly petiolate; leaf blade pentagonal, 2.5--3 × 3--4 cm, abaxially glabrous, adaxially pubescent at veins, base cordate, 3-parted; central lobe rhombic or flabellate; lateral lobes obliquely flabellate, unequally 2- or 3-fid. Inflorescence 5--7 cm, 4--6-flowered; rachis and pedicels spreading pubescent; proximal bracts leaflike, distal ones lanceolate. Pedicels 1--1.5 cm, with 2 bracteoles above middle; bracteoles linear-lanceolate, 2--3 mm, both surfaces glabrous. Sepals blue-purple, abaxially pubescent, adaxially glabrous; lower sepals elliptic, ca. 1 × 0.5--0.8 cm; lateral sepals broadly obovate, ca. 1.2 × 1.3 cm; upper sepal navicular, 7--10 mm high, 1.6--2.5 cm from base to beak, lower margin suberect or slightly concave. Petals ca. 3 cm, glabrous; limb ca. 5 mm, glabrous; lip ca. 1.5 mm, erose; spur curved, ca. 1 mm. Stamens sparsely pilose or glabrous; filaments entire. Carpels 5, appressed pubescent. Fl. Aug.

* Alpine meadows; ca. 3900 m. NW Yunnan (Weixi Lisu Zu Zizhixian).