Omphalodes mairei H. Léveillé, Repert. Spec. Nov. Regni Veg. 12: 188. 1913; Trigonotis muriculata I. M. Johnston.

Herbs perennial. Rhizomes blackish. Stems erect, 40-50 cm tall, strigose; stem leaves widely spaced; petiole 2-7 cm; leaf blade ovate to broadly elliptic, 4-6 × 2.5-5 cm, sparsely strigose, apex obtuse to emarginate, mucronate. Inflorescences with distinct peduncles, to 10 cm, ebracteate. Pedicel obliquely spreading, to 4 mm in fruit. Calyx lobes oblanceolate, ca. 2.5 mm, strigose, apex acute. Corolla blue-purple; tube ca. 1.8 mm; throat appendages narrow, thin; limb 3.5-4 mm wide; lobes suborbicular, ca. 1.8 mm. Anthers elliptic, ca. 0.8 mm., apex rounded. Mature nutlets dark brown, semiglobose-tetrahedral, ca. 1 mm, dorsiventrally compressed, tuberculate, adaxial bottom surface convex, juncture of 2 lateral surfaces prominent; abaxial surfaces convex, crustaceous, narrowly ribbed around margin, sessile.

* Forests, meadows; 700-1300 m. Sichuan (Mabian Xian), Yunnan.