西藏虎耳草 xi zang hu er cao

Hirculus tibeticus (Losinskaja) Losinskaja.

Herbs perennial, densely cespitose, (1-)2-16 cm tall. Stem densely brown crisped villous. Basal leaves with petiole 2-3 cm, margin brown crisped villous; leaf blade elliptic to oblong, 8-10 × 2-6.5 mm, glabrous, apex obtuse. Cauline leaves with petiole 1-1.3 cm proximally on stem, gradually shorter to absent distally on stem; leaf blade narrowly ovate or lanceolate to oblong, 0.6-1.4 cm × 1.5-6 mm, glabrous or margin brown crisped villous. Flower solitary; bract 1, narrowly ovate or narrowly lanceolate to oblong, 3.5-9 × 1-3.5 mm, both surfaces glabrous, margin brown crisped villous; pedicel ca. 5 mm, brown crisped villous. Sepals reflexed, subovate to narrowly ovate, 3.2-4.1 × 1.5-2.5 mm, both surfaces glabrous, veins 3-5, not confluent at apex, margin brown crisped villous, apex obtuse. Petals purple abaxially, proximally purple and distally yellow adaxially, ovate to narrowly so, 4-5 × 1.9-2.1 mm, 2-callose, 3-5-veined, base with a claw 0.5-1.4 mm, apex obtuse. Stamens 2-3.5 mm. Ovary ovoid, ca. 2 mm, with an annular nectary disc; styles ca. 1.5 mm. Fl. and fr. Jul-Sep. 2n = 16*.

* Rocky alpine meadows, marshes, rock crevices; 4300-5600 m. SW Qinghai, Xinjiang, Xizang.