Description from Flora of China
Primula atrodentata W. W. Smith subsp. orestora (Craib & Cooper) W. W. Smith & Forrest; P. orestora Craib & Cooper.
Herbs perennial, lacking basal bud scales at anthesis. Leaves forming a rosette; petiole nearly obsolete to occasionally nearly as long as leaf blade; leaf blade elliptic to oblong or spatulate, 1.5--6 X 0.5--2 cm, tapering to base, minutely glandular, abaxially occasionally white or pale yellow farinose, margin denticulate, apex rounded to obtuse. Scapes (1--)4--8(--15) cm, sometimes to 20--30 cm in fruit, yellow farinose toward apex; umbel capitate, many flowered; bracts linear-lanceolate, 3--6 mm, base gibbous, apex acute. Pedicel nearly obsolete or to 1 mm. Flowers heterostylous. Calyx campanulate, 5--7 mm, glandular or scarcely farinose, parted slightly below middle; lobes lanceolate, usually tinged with purple at apex. Corolla mauve or pale blue-violet, with a white eye; tube ca. 2 X as long as calyx; limb 1--1.5 cm wide; lobes broadly obovate, deeply 2-lobed. Pin flowers: stamens near base of corolla tube; style ca. 1/2 as long as tube. Thrum flowers with positions reciprocal. Capsule subglobose, shorter than calyx. Fl. May-Jun. 2n = 22.
Moist meadows, among shrubs; 3600--4700 m. SE Xizang [Bhutan, India, Nepal, Sikkim].