白瓣虎耳草 bai ban hu er cao

Plants many branched, to 2 cm tall, with shoots forming cushions. Flowering stem ca. 1 cm, glandular pilose. Shoot leaves subobovate, ca. 4 × 2 mm, thickened distally, both surfaces glabrous, chalk glands 5-7, margin densely shortly ciliate proximally, apex not or rather recurved, subobtuse. Flower solitary; hypanthium glandular pilose. Sepals broadly subovate, ca. 1.8 mm, abaxially and marginally densely glandular pilose, usually with chalk glands, veins 3, not confluent at apex, apex thickened, glabrous. Petals white, broadly obovate, ca. 6 × 4.2 mm, ca. 6-veined, base gradually narrowed into a claw ca. 1.5 mm. Stamens 3-3.5 mm. Carpels connate proximally; ovary subsuperior; styles ca. 1.5 mm. Fl. Jul-Aug.

* Stony ground; ca. 4800 m. S Xizang.