普格乌头 pu ge wu tou

Caudex unknown. Stem ca. 1 m tall, several branched below inflorescence, glabrous. Distal leaves shortly petiolate; petiole ca. 3 cm, glabrous; leaf blade pentagonal, ca. 8 × 10 cm, glabrous, base cordate, 3-parted; central lobe rhombic; lateral lobes obliquely flabellate, unequally 2-fid slightly beyond middle. Inflorescence terminal, ca. 18 cm, 10-flowered; rachis and pedicels glabrous; bracts leaflike. Proximal pedicels to 8 cm, distal ones 2--3.5 cm, with 2 bracteoles above middle; bracteoles of proximal pedicels leaflike, shortly petiolate, 3-parted, 0.7--1.7 × 1.1--1.7 cm; distal ones elliptic, obovate, or oblong, smaller, 5--6 × 1.5--3 mm, glabrous, undivided. Sepals dark purple-red; lower sepals ca. 1.1 cm; lateral sepals ca. 1.3 cm; upper sepal galeate, ca. 2 cm high, ca. 1.2 cm wide, glabrous, shortly beaked, lower margin suberect, oblique upward, ca. 2 cm. Petals ca. 2 cm, glabrous; claw geniculate at apex; limb ca. 1.1 × 3 mm; lip ligulate, ca. 5 mm, apex slightly concave; spur ca. 3.5 mm, circinate. Stamens glabrous; filaments entire or 1- or 2-denticulate. Carpels 5, glabrous. Fl. Aug.

* Forests, forested valleys, by streams; 2800--3600 m. Sichuan, NE Yunnan.