Primula planiflora Handel-Mazzetti.

Herbs perennial, efarinose, glabrous. Leaves forming a rosette; petiole indistinct or sometimes nearly as long as leaf blade, broadly winged; leaf blade obovate-elliptic to oblanceolate, (2.5--)4--10(--13) X 1.2--5 cm, strongly tapering to base, margin regularly denticulate, apex rounded. Scapes 20--45 cm, elongating to 60 cm in fruit; umbels 2--6, superimposed, 3--10-flowered; bracts linear-lanceolate, 5--10 mm. Pedicel 1--2 cm. Flowers heterostylous. Calyx campanulate, ca. 5 mm, parted to 1/3; lobes triangular to oblong, apex subobtuse. Corolla deep purplish crimson or rose-purple; tube 0.9--1.1 cm; limb spreading, 1.8--3 cm wide; lobes obovate to suborbicular, 8--9.5 X 6--8 mm, apex usually 2-cleft. Pin flowers: stamens ca. 2 mm above base of corolla tube; style ca. 6.5 mm. Thrum flowers with positions reciprocal. Capsule ovoid, slightly longer than calyx. Fl. May-Jul. 2n = 22@.

* Wet areas, inundated meadows; 2500--3100 m. W Sichuan, C and N Yunnan