266. Primula dryadifolia Franchet, Bull. Soc. Bot. France. 32: 270. 1885.
石岩报春 shi yan bao chun
Herbs perennial, evergreen, forming dense cushions. Rhizomes woody, conspicuous, much branched. Leaves evergreen; petiole 1--3 X as long as leaf blade, broadly winged, sheathing toward base; leaf blade broadly ovate to broadly elliptic or suborbicular, 3--20 X 3--13 mm, leathery, abaxially densely yellow or white farinose, adaxially sparsely short glandular pubescent or subglabrous, base truncate to cordulate, rarely broadly cuneate, margin crenulate, usually narrowly revolute, apex rounded to obtuse. Scapes 0.4--10 cm, pubescent, 1--5-flowered; bracts often tinged with purple, broadly ovate to elliptic, 5--12 X 3--7 mm, apex obtuse to dentate. Pedicel nearly obsolete to 2 mm. Flowers heterostylous. Calyx broadly campanulate, 5--8(--10) mm, pubescent, farinose at base, parted to middle; lobes ovate to oblong-ovate, apex rounded to obtuse. Corolla purple-rose or yellow; tube 1--1.5 X as long as calyx; limb 1.5--2.5 cm; lobes broadly obovate, deeply 2-lobed; lobules entire or 2- or 3-toothed. Pin flowers: stamens in lower 1/2 of corolla tube; style slightly exceeding middle of corolla tube or reaching annulus. Thrum flowers with positions reciprocal. Capsule oblong-ovoid, nearly as long as calyx. Fl. Jun-Jul.
Limestone screes, on moss-covered boulders, cliff edges; 4000--5500 m. W Sichuan, Xizang, NW Yunnan [Bhutan, N Myanmar]