Description from Flora of China
Primula mollis Nuttall ex Hooker subsp. seclusa (I. B. Balfour & Forrest) W. W. Smith & Forrest; P. seclusa I. B. Balfour & Forrest.
Herbs perennial, robust. Leaves forming a rosette; petiole 5--20 cm, densely pilose; leaf blade suborbicular to reniform, 4--18 cm wide, abaxially with scattered, black or reddish, minute glands and multicellular hairs along veins, adaxially densely pilose, base deeply cordate, margin sinuate-lobulate and denticulate-crenulate. Scapes 10--60 cm, with multicellular hairs; umbels 3--10, superimposed, 4--10-flowered; bracts narrowly lanceolate, 0.5--1.5 cm, with long hairs. Pedicel 1--3 cm, sparsely pilose. Flowers heterostylous or homostylous. Calyx narrowly campanulate, 8--11 mm, pubescent, often tinged with purple, parted to middle; lobes ovate to ovate-lanceolate; veins 3--5. Corolla dark rose to deep crimson; tube ca. 1.2 cm; limb 1--2 cm wide; lobes oblong-obovate, ca. 7 mm, emarginate. Homostylous flowers with stamens near middle of corolla tube; style reaching stamens. Pin flowers: stamens at middle of corolla tube; style slightly shorter than tube, ca. 1 mm. Capsule ellipsoid, slightly shorter than calyx. 2n = 24.
Broad-leaved forests; 2400--2700 m. W Yunnan (Pianma Xian, Tengchong Xian) [Bhutan, N Myanmar].