拟膝瓣乌头 ni xi ban wu tou

Caudex carrot-shaped, ca. 8 cm. Stem ca. 80 cm, apically shortly branched, basally spreading and apically appressed pubescent, with leaves equally arranged along stem. Proximal cauline leaves withered at anthesis, middle ones slightly long petiolate; petiole 4.5--6 cm, proximally pubescent; leaf blade reniform-pentagonal, 4--4.8 × 5.2--6.8 cm, herbaceous, abaxially glabrous, adaxially sparsely appressed pubescent, 3-sect or -parted nearly to 1 mm from base; central segment rhombic, pinnately parted nearly to midvein; lateral segments obliquely flabellate, unequally 2- or 3-parted. Inflorescence terminal, ca. 7 cm, 4--6-flowered; rachis and pedicels glabrous, or appressed pubescent; proximal bracts leaflike, others linear. Pedicels to 5.5 cm, with 2 bracteoles at middle or below; bracteoles narrowly linear, 3--5 mm, glabrous. Sepals ?blue-purple; lateral sepals obliquely broadly obovate, abaxially glabrous or appressed pubescent, adaxially sericeous-pubescent; upper sepal galeate, glabrous. Petaline claw and lip rarely pubescent, other parts glabrous; spur incurved, ca. 5 mm, subcylindric; claw geniculate at apex. Stamens glabrous; filaments entire or 2-denticulate. Carpels 3, glabrous.

* Slopes; 2700--3500 m. W Sichuan.