Herbs perennial, glabrous. Sterile stems 1-5, 1-2.5 cm. Flowering stems simple or branched, erect or basally vaulted, 7-13 cm, densely leafy. Leaf blade ovate-lanceolate to narrowly triangular, 3-7 × 1.2-2 mm, basal spur short and truncate or 3-lobed. Cyme corymbiform, ± dense; bracts leaflike. Flowers shortly pedicellate, unequally 5-merous. Sepals narrowly oblong to ovate, 3.5-4.8 × ca. 0.4 mm, base truncate and shortly spurred, apex shortly acuminate. Petals yellowish green, narrowly ovate-lanceolate, 6.5-8.2 × 1.4-1.5 mm, base subconnate and slightly narrowed, apex acute and mucronate. Stamens 10; antepetalous ones ca. 4 mm, inserted 1.5-2 mm from petal base. Nectar scales linear-spatulate, apex depressed. Carpels oblong, base connate for ca. 1.1 mm; ovules 10-17. Styles ca. 2 mm. Seeds brown, obovoid, mammillate. Fl. Sep, fr. Oct.

* Forests, forest margins, rocks, gravel beaches in valleys; 3500-4200 m. W Sichuan, E Xizang.