小花乌头 xiao hua wu tou

Caudex obovoid, ca. 1.2 cm, ca. 5 mm in diam. Stem ca. 50 cm, simple, glabrous. Leaves ca. 10, crowded below or near base, long petiolate; petiole 3.5--13 cm; leaf blade orbicular-reniform or pentagonal, 3.2--3.5 × 5--7 cm, papery, both surfaces glabrous, base cordate, 3-parted; central lobe cuneate-rhombic; lateral lobes obliquely flabellate, unequally 2-fid. Inflorescence terminal, ca. 14 cm, 15-flowered; rachis and pedicels densely retrorse pubescent; proximal bracts 3-fid, 7--10 mm, distal ones linear, 2.5--4 mm, glabrous. Pedicels 3--7 mm, with 2 bracteoles at or near base; bracteoles lanceolate-linear, ca. 1.5 mm, glabrous. Sepals purple, abaxially appressed pubescent; lower sepals long elliptic or oblong, 6.5--7.5 × 2.5--4.5 mm; lateral sepals obliquely broadly ovate, 6.5--8.5 × 5--7 mm; upper sepal galeate, 7--11 mm high, long beaked, lower margin ca. 1.1 cm. Petals 0.8--1.2 cm; claw 6.5--8 mm, sparsely pubescent at apex; limb 7--7.5 mm, ecalcarate; lip 4--5 mm, sparsely pubescent at base, apex 2-lobed. Stamens 3.5--5 mm, glabrous; filaments entire. Carpels 3, glabrous. Fl. Aug.

* By streams; 3900--4000 m. W Sichuan (Xiangcheng Xian).