茂汶乌头 mao wen wu tou

Caudex carrot-shaped or subterete, 3--8 cm. Stem ca. 28 cm, simple, glabrous. Proximal cauline leaves withered at anthesis, middle ones slightly long petiolate; petiole 1.5--2.6 cm, glabrous; leaf blade cordate-pentagonal, 4--5.5 × 4.8--6 cm, both surfaces glabrous, 3-sect; central segment rhombic, apex acute; ultimate lobes lanceolate-linear, 1.5--2 mm wide; lateral segments obliquely flabellate, unequally 2-parted to subbase. Inflorescence terminal, ca. 9 cm, ca. 14-flowered; rachis and pedicels glabrous; proximal bracts leaflike, distal ones linear, ca. 8 mm. Pedicels 0.5--1.5 cm, with 2 bracteoles above base; bracteoles narrowly lanceolate or triangular, 0.8--2.5 mm, glabrous. Sepals purple, abaxially glabrous; lower sepals elliptic, 0.8--1.1 cm; lateral sepals obliquely broadly obovate, 1.7--2 cm; upper sepal galeate-navicular, shortly beaked, ca. 1.8 cm from base to beak. Petals 1.2--2 cm; claw glabrous; limb ca. 8 mm; lip ca. 3.5 mm, 2-lobed, ciliate; spur incurved, 2--2.5 mm, glabrous. Stamens sparsely pilose at apex; filaments entire. Carpels 5, glabrous.

* About 4200 m. Sichuan (Maowen Qiang Zu Zizhixian).