Microcaryum trichocarpum Handel-Mazzetti, Anz. Akad. Wiss. Wien. Math.-Nat. Kl. 61: 164. 1924; Oreogenia trichocarpum (Handel-Mazzetti) Brand.

Herbs annual, 3-9 cm tall. Stems single or several, erect or decumbent, usually branched above middle, pilose. Leaves ± sessile, obovate to ovate-oblong, 5-13 × 2-6 mm, villous, obscurely veined, base cuneate, apex obtuse; basal leaves attenuate. Inflorescences terminal, several flowered, gradually elongated to 2 cm, ebracteate. Pedicel in lower part of inflorescences to 8 mm. Flowers pedicellate. Calyx ca. 2.5 mm, villous outside; lobes linear. Corolla blue; tube ca. as long as calyx; throat appendages low trapeziform, slightly 2-cleft; limb ca. 4 mm wide; lobes spreading, suborbicular to broadly obovate. Anthers ovoid, ca. 0.5 mm. Style ca. 0.7 mm. Nutlets brown, narrowly ovoid, ca. 1.4 mm, densely short appressed pubescent on transverse wrinkles, somewhat keeled abaxially along center line; attachment scar narrowly ovate. Fl. Jun-Jul.

* Slopes; ca. 3000 m. SW Sichuan, W Yunnan.