Description from Flora of China
Mitrasacme mairei H. Léveillé.
Herbs annual or biennial. Stems erect, (2--)10--35 cm, simple or branched only in inflorescences, sparsely or densely villous. Basal leaves forming a rosette 7--10 mm in diam., usually withering during anthesis, oblanceolate. Stem leaves alternate, sessile or subsessile, elliptic to ovate-elliptic or ovate, 4--15 X 1.2--6 mm, sparsely pubescent, base short attenuate to rounded, margin slightly thickened and cartilaginous, apex acute to subobtuse, mucronate. Umbels terminal and axillary, occasionally with solitary flowers in axils of upper leaves; bracts leaflike, ovate to ovate-lanceolate, ca. 3.5 mm. Pedicel 1--3 cm, sparingly glandular. Calyx 3--3.5 mm, parted to 1/2; lobes narrowly triangular, with scattered short-stalked glands, apex apiculate; veins 3, obscure. Corolla white or pink, 2.5--4 mm in diam.; lobes oblong, 0.8--1.2 mm wide. Fl. Apr-Jun.
Grassy mountain slopes, dry banks, open woodlands; 2400--3400 m. Gansu, Qinghai, Sichuan, Xizang, Yunnan [Nepal].