石峰杜鹃 shi feng du juan

Shrubs, 2–4 m tall; old branches smooth, sparsely scaly; young shoots sparsely scaly. Petiole grooved, 8–13 mm, densely scaly, rarely hispid or glabrous; leaf blade leathery, oblong-obovate, or oblong-oblanceolate, 4–8 × 1.6–3.6 cm; base obtuse or cuneate; apex rounded or obtuse; abaxial surface pale gray-green, scales sparse, 2–4 × their own diameter apart, average to small, brown; adaxial surface deep green when dry, often convex, without scales. Inflorescence terminal, cymose, 2–4-flowered; rachis 2–3 mm, scaly. Flowers fragrant. Pedicel 0.8–1.8 cm, densely scaly; calyx obliquely 5-lobed; lobes ca. 2 mm, ovate, scaly, without hairs; corolla funnelform, white tinged with pale red, with yellow markings inside, 4–6 cm, outer surface sparsely scaly and pubescent; stamens 10(or 11), unequal, 2.4–4.7 cm; filaments densely pubescent at base; ovary 6-locular, densely scaly; style as long as corolla, base scaly. Capsule cylindric, oblique at base, 12–20 mm, densely scaly.

Rocky thickets, cliffs. SE Xizang.