Primula sulphurea Pax & K. Hoffmann.

Herbs perennial, with fibrous remains of old leaves at base. Leaves forming a rosette; petiole inconspicuous to 1/2 as long as leaf blade, narrowly winged; leaf blade spatulate to narrowly lanceolate or linear-oblanceolate, 1.5--8 X 0.2--1 cm, abaxially densely yellow farinose, base attenuate, margin crenate and often narrowly revolute, apex subobtuse. Scapes 6--25 cm; umbels 4--12-flowered; bracts lanceolate to linear-lanceolate, 4--10 mm, base slightly gibbous. Pedicel 0.5--2.5 cm, initially farinose, becoming efarinose. Flowers heterostylous. Calyx campanulate to narrowly campanulate, 5--8.5 mm, densely farinose inside, parted to middle or slightly below; lobes narrowly triangular to sublanceolate, apex acute to subacuminate. Corolla bright yellow; tube 1--1.2 cm; limb 1.5--2 cm wide; lobes elliptic, deeply emarginate. Pin flowers: stamens ca. 2 mm above base of corolla tube; style slightly shorter than tube. Thrum flowers with positions reciprocal. Capsule oblong, slightly longer to 2 X as long as calyx.

* Damp meadows; 3000--4300 m. W Sichuan.