Herbs annual, diffuse. Stems prostrate, 5-13 cm tall, ca. 1 mm in diam., densely appressed pubescent. Leaves ± sessile, lanceolate-oblong to ovate-oblong, 0.6-1.5 cm × 3-5 mm, appressed pubescent, base broadly cuneate to suborbicular, apex obtuse to acute. Inflorescences axillary or extra-axillary. Pedicel 2-4 mm, appressed pubescent. Calyx lobes ovate to obovate-lanceolate, 2-3 mm, appressed pubescent outside, glabrous or only apex slightly appressed pubescent inside. Corolla white, campanulate-tubular; tube ca. 1 mm; appendages transverse linear; lobes short oblong, ca. 0.7 mm. Stamens inserted on middle of corolla tube; anthers oblong, ca. 0.3 mm. Gynobase low fastigiate, ca. 0.8 mm, with 2 or 3 semiorbicular ears. Nutlets dorsiventrally compressed, sparse-ly pubescent, 2.4-2.8 × 1.5-1.8 mm excluding marginal glochids, adaxially protruding; abaxially triangular-ovate, flat or slightly convex; marginal glochids lanceolate, 1-1.8 mm, sparsely pubescent, bases nearly free or slightly confluent into a narrow wing; attachment scar at middle or slightly below adaxially. Fl. and fr. Aug-Sep.

* Slopes; 4500-4800 m. Xizang (Biru Xian).