玉树杜鹃 yu shu du juan

Small, erect shrubs, tufted; branches of current year densely covered with pale and dark scales. Petiole ca. 1 mm, scaly; leaf blade elliptic or oblong, 0.6–0.8 × 0.3–0.4 cm; base broadly cuneate or cuneate; apex rounded, not mucronulate; abaxial surface yellowish green, scales overlapping; uniformly pale yellow; adaxial surface dark green, scales contiguous or slightly overlapping, gray. Inflorescence usually 2-flowered. Pedicel 0.5–1 cm, scaly; calyx lobes ca. 1 mm, oblong, unequal, glabrous except for the scaly margin; corolla broadly funnelform, purple, 0.5–0.6 cm, tube ca. 2 mm, throat pubescent; stamens 10, 0.3–0.4 cm, shorter than corolla; ovary ca. 1.5 mm, scaly; style 3.5–4.5 mm, glabrous.

About 4200 m. S Qinghai.