革叶乌头 ge ye wu tou

Caudex carrot-shaped, 6--9 cm, 7--10 mm in diam. Stem ca. 60 cm, subdichasial branched, sparsely spreading pubescent, apically glabrous, ca. 15-leaved. Cauline middle and distal leaves shortly petiolate; petiole 0.6--3 cm; leaf blade cordate-pentagonal, 5--6 × 5--8 cm, leathery, abaxially glabrous, adaxially sparsely pubescent at veins, base deeply cordate, 3-parted, between lobes slightly imbricate; central lobe broadly rhombic, apex obtuse, 3-lobed; lateral lobes unequally 2-fid ± to middle. Inflorescence terminal or axillary, ca. 10 cm, 2--6-flowered, dichasial branched; rachis and pedicels glabrous; bracts leaflike. Pedicels 1.5--3.7 cm, with 2 bracteoles near middle; bracteoles oblong or linear, 3.5--7 mm, those of proximal pedicels 3-fid. Sepals abaxially glabrous; lower sepals oblong or linear, 1.1--1.2 cm; lateral sepals obliquely broadly obovate, ca. 1.5 × 1.4 cm, adaxially sparsely villous; upper sepal galeate, 1.8--2.2 cm high, clawed, beak ca. 3 mm, lower margin 1.8--2 cm. Petals ca. 1.8 cm; claw glabrous; lip ca. 6 mm, 2-lobed, pilose; spur curved, ca. 3 mm, glabrous. Stamens glabrous; filaments entire. Carpels 3, glabrous. Fl. Aug.

* Slopes; ca. 2400 m. Sichuan (Jiulong Xian).