珠峰齿缘草 zhu feng chi yuan cao

Herbs perennial, cushionlike, 2-5 cm tall. Stems slightly surpassing leaf cluster, pilose. Leaves basal; petiole 1-1.5 cm; leaf blade oblong to broadly elliptic or obovate, 3-6 × 2-4 mm, spreading pilose, base broadly cuneate, apex obtuse to acute. Inflorescences terminal, 1-4-flowered; bracts leaflike. Pedicel 3-5 mm, pilose. Calyx lobes reflexed, lanceolate, ca. 2 mm in fruit, densely appressed pubescent outside, sparsely short appressed pubescent inside. Corolla blue-purple, campanulate-tubular; tube ca. 1.2 mm; lobes obovate to short oblong, ca. 0.8 mm, with a partly sunken basal area outside, inside slightly convex becoming triangular to cordate. Stamens inserted on middle of corolla tube; anthers suborbicular, ca. 0.2 mm in diam. Gynobase nearly semiglobose, ca. 0.5 mm. Style shorter. Nutlets dorsiventrally compressed, ovate, 1.8-2 × ca. 1 mm excluding marginal glochids; adaxially protuberant, keeled; abaxially slightly convex, sparsely white hispid; marginal glochids shorter, confluent below middle into a broad wing, hispid; attachment scar above middle adaxially. Fl. and fr. Jun-Jul.

* Alpine meadows, rock crevices; 5400-5500 m. Xizang.