鲁浪杜鹃 lu lang du juan

Shrubs or small trees, ca. 3–4 m tall; shoots 4–5 mm in diam., densely appressed cinereous tomentose, glabrescent. Petiole 20–25 mm, sparsely grayish floccose; leaf blade thickly leathery, oblong-elliptic to narrowly oblong, 8.5–15.5 × 2.5–5 cm; base broadly cuneate or subrounded; margin slightly revolute; apex acute and mucronate; abaxial surface indumentum white, thin, 1-layered, appressed, hairs short and branched; adaxial surface glossy, glabrous. Inflorescence racemose-umbellate, 6–10-flowered; rachis ca. 10 mm, pubescent. Pedicel red, 2.5–3 cm, sparsely branched-hairy and shortly glandular-hairy; calyx lobes 5, 1–2 mm, glabrous, broadly triangular; corolla funnel-campanulate, pale pink to white, red-purple towards base, without spots, 3–4 × 3–3.5 cm, puberulent inside, lobes 5, 1.4–1.5 cm, emarginate; stamens 10, 1.5–2.4 cm, filaments white-puberulent at base; ovary ca. 7 mm, sparsely pubescent and shortly glandular-hairy; style pink, ca. 2.4 cm, glabrous; stigma subdiscoid. Fl. May.

Abies forests, forest margins, mountains; 3000–3900 m. S Xizang.