对叶齿缘草 dui ye chi yuan cao

Herbs perennial, 15-30 cm tall. Stems several, cespitose, frequently bifurcate branched, pubescent, with persistent withered leaves and branches at base. Petiole of basal leaves 3-9 cm; leaf blade ovate to elliptic, 1-2.5 × 0.8-1.3 cm, abaxially short appressed pubescent, adaxially glabrescent, base rotund, apex obtuse; stem leaves 4 or 5, uppermost becoming involucral, ± sessile, ovate to broadly ovate, 1-1.5 cm × 6-10 mm. Inflorescences axillary or extra-axillary. Pedicel 4-7 mm, sparsely pubescent. Calyx lobes erect at anthesis, divaricate in fruit, linear-oblong to ovate-oblong, ca. 1.5 mm, appressed pubescent outside, glabrescent inside. Corolla white, campanulate-rotate; tube ca. 2 mm; appendages trapeziform, distinctly exserted, with an emergence inside; limb ca. 7 mm wide; lobes broadly obovate, or suborbicular. Anthers subglobose, ca. 0.5 mm in diam. Gynobase ca. 0.5 mm. Style ca. 0.1 mm. Nutlets dorsiventrally compressed, short pubescent, ca. 1.5 × 1 mm excluding marginal glochids, base rounded and obtuse, apex acuminate; disc ovate to narrowly ovate, slightly convex; marginal glochids triangular to lanceolate, free; attachment scar above middle adaxially, ovate.

Moist stream banks, alpine crevices; 3000-3400 m. Xinjiang [Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Turkmenistan, Uzbekistan].