广口杜鹃 guang kou du juan

Dwarf shrubs, often prostrate, evergreen, ca. 0.3 m tall. Petiole 1–2 mm, scaly; leaf blade leathery, obovate or obovate-elliptic, 0.9–1.7 × 0.5–1 cm; base rounded; margin crenulate-undulate; apex rounded, mucronulate; abaxial surface pale green, scales 2–3 × their own diameter apart, large, brown; adaxial surface dark green, scaly. Inflorescence 1- or 2-flowered. Pedicel 1.5–2.5 cm, densely scaly; calyx deeply 5-lobed; lobes 5–7 mm, broadly ovate, persisting to enclose mature capsule, densely scaly, margin ciliate; corolla broadly campanulate, yellow with reddish brown spots inside tube, 1.5–3 × ca. 4 cm, tube ca. 14 mm, outer surface densely pubescent and scaly; stamens 10, shorter than corolla, filaments densely pubescent towards base; ovary ovoid, densely scaly; style slender, straight, longer than stamens, shorter than corolla, glabrous. Capsule rounded, 4–5 mm, scaly. Fl. Apr–Jun, fr. Jul–Oct.

Rocky hillsides; 3900–4200 m. S Xizang [NE India].