冕宁乌头 mian ning wu tou

Caudex obconical, ca. 3.5 cm, ca. 1.5 cm in diam. Stem 1--1.2 m, simple, basally glabrous, apically retrorse white pubescent. Proximal cauline leaves withered at anthesis, and middle ones with petiole ca. 2.5 cm; leaf blade broadly ovate or pentagonal, 7--9 × 8--11 cm, papery, both surfaces sparsely white pubescent, 3-sect; central segment rhombic or broadly rhombic, base narrowly cuneate, ultimate lobes narrowly ovate or lanceolate-linear, margin entire or 1-dentate, 2--3.5 mm wide; lateral segments obliquely flabellate, unequally 2-parted nearly to base. Inflorescence densely many flowered; rachis and pedicels densely spreading white pubescent; proximal bracts 3-fid, distal ones lanceolate. Pedicels 0.8--2 cm, distally with 2 bracteoles; bracteoles linear, ca. 5 mm. Sepals blue, abaxially ± densely pubescent; upper sepal galeate, 1.5--2 cm high, shortly beaked, ca. 1.4 cm from base to beak, external margin suberect. Petals sparsely pubescent; lip ca. 4 mm; spur slightly incurved, ca. 1 mm. Stamens glabrous; filaments entire or 2-denticulate. Carpels 3--5, glabrous. Follicles erect, 1.8--2.2 cm. Seeds ca. 2 mm. Fl. Sep.

* Grassy slopes; 2500--2800 m. SW Sichuan (Mianning Xian).