Description from Flora of China
Primula cardiophylla I. B. Balfour & W. W. Smith; P. cordata I. B. Balfour ex W. W. Smith & Forrest; P. cordifolia Pax; P. rotundifolia Wallich; P. roxburghii N. P. Balakrishnan.
Herbs perennial, with withered leaves and few bud scales at base. Leaves forming a rosette; petiole 1--3 X as long as leaf blade; leaf blade suborbicular, 4--12 cm wide, abaxially yellow farinose or occasionally efarinose, adaxially sparsely glandular, base deeply cordate, margin irregularly coarse dentate, apex rounded to obscurely apiculate; lateral veins subpinnate. Scape 10--25(--30) cm, minutely glandular or occasionally farinose toward apex; umbels 1 or 2, superimposed, 2--16-flowered; bracts linear to subulate, 0.5--1.5 cm, densely glandular. Pedicel 1--2 cm, elongating to 3 cm in fruit, farinose, minutely glandular. Flowers heterostylous. Calyx campanulate, 5--6 mm, farinose, parted to near base; lobes oblong-lanceolate, apex acute to obtuse; veins 3. Corolla pale purplish pink; tube ca. 2 X as long as calyx; limb 1.2--1.9 cm wide; lobes suborbicular to broadly ovate, margin entire to obscurely crenulate. Pin flowers: stamens at middle of corolla tube; style ca. as long as tube. Thrum flowers with positions reciprocal. Capsule oblong, ca. 1 cm. Fl. Jun. 2n = 22.
In rock crevices; 3500--5000 m. S Xizang [NE India, Nepal].