Primula citrina I. B. Balfour & Purdom.

Herbs perennial. Leaves forming a rosette; petiole nearly as long as leaf blade, rarely 2--3 X as long as leaf blade; leaf blade broadly ovate to elliptic or occasionally suborbicular, 1.5--4 X 1--2.5 mm, membranous when dry, abaxially unevenly fugacious white farinose, adaxially subglabrous or sparsely pubescent, base usually attenuate, occasionally subrounded and abruptly short attenuate, margin bluntly serrate, rarely sharply dentate, apex subrounded. Scapes 2--10 cm, sparsely pubescent; umbels 2--13-flowered; bracts lanceolate, 5--10 mm, glandular puberulous. Pedicel 0.8--3 cm, glandular puberulous. Flowers heterostylous. Calyx campanulate, 4--6 mm, puberulous, white farinose at base, parted to below middle; lobes narrowly oblong to lanceolate, glandular ciliolate, usually farinose inside, apex obtuse to acute. Corolla yellow, becoming green when dry; tube 1.2--1.4 cm; limb 1--1.5 cm wide; lobes broadly obovate, deeply emarginate. Pin flowers: stamens near middle of corolla tube; style ca. as long as tube. Thrum flowers with positions reciprocal. Capsule usually slightly shorter than calyx. Fl. May-Aug.

* On damp rocks; 3000--5000 m. S and W Gansu, E Qinghai, N Sichuan