平卧白珠 ping wo bai zhu

Shrubs procumbent, 10–20 cm tall. Twigs ?terete, pubescent, later glabrescent and cinereous. Petiole ca. 1 mm, glabrous; leaf blade elliptic, 1–1.2 cm × 6–8 mm, papery, abaxially scattered dark punctate, glabrous, secondary veins 2 or 3 pairs, fine veins conspicuous on both surfaces, impressed adaxially, base broadly cuneate, margin crenulate(-apiculate), apex rounded or obtuse. Inflorescences terminal, usually racemose, ca. 1 cm, 1–3-flowered, pubescent; bracts green, ovate, 2–3 mm, margin rose. Pedicel ca. 1 mm; bracteoles 2. Calyx lobes ovate, ca. 2 mm, apex acute. Corolla white, broadly campanulate, ca. 4 mm, abaxially glabrous; lobes ovate-triangular, ca. 1 mm. Stamens ca. 2 mm; filaments puberulous; thecae 1-awned. Ovary depressed-globose, slightly pubescent. Fruit unknown. Fl. Jul.

Open moist pastures, boulders; ca. 4600 m. NW Yunnan (Gongshan).

This species is known only from the type specimen.