Rhododendron sulfureum Franch.

Shrubs, evergreen, usually epiphytic, 0.3–1.6 m tall; branchlets scaly, usually setose. Petiole 4–12 mm, densely scaly, often setose; leaf blade leathery, obovate, ovate, oblong-obovate, or elliptic to oblanceolate, 2.6–8.6 × 1.5–4.5 cm; base obtuse or tapering; margin often ciliate when young; apex rounded or subacute, mucronate; abaxial surface glaucous green, scales ca. 0.5 × their own diameter apart, unequal, dark brown or brown, sunk in pits, with crenulate edges, rims upturned; adaxial surface green, somewhat shiny, scaly or glabrous. Inflorescence 4–8-flowered. Pedicel 0.8–2 cm, scaly, sometimes setose; calyx lobes 3–6 mm, ovate to oblong, persisting to enclose mature capsule, scaly, margin usually cilite; corolla broadly campanulate, bright yellow, rarely greenish, not spotted, 1.3–2 cm, tube 8–11 mm, outer surface scaly, sometimes sparsely pubescent, inner surface pilose, lobes rounded; stamens 10, filaments pubescent towards base or in lower 1/2; ovary densely scaly; style stout, sharply bent, short, scaly at base. Capsule cylindric-ovoid, 8–11 mm, densely scaly. Fl. Apr–Jun, fr. Jul–Aug.

SE Xizang, W Yunnan [NE Myanmar].

Forests, scrub, cliffs, rocks, sometimes epiphytic; 2500–4000 m.

Rhododendron sulfureum adalah spesies tumbuhan yang tergolong ke dalam famili Ericaceae. Spesies ini juga merupakan bagian dari ordo Ericales. Spesies Rhododendron sulfureum sendiri merupakan bagian dari genus Rhododendron.

Rhododendron sulfureum là một loài thực vật có hoa trong họ Thạch nam. Loài này được Franch. miêu tả khoa học đầu tiên năm 1887.

硫磺杜鹃（学名：Rhododendron sulfureum）为杜鹃花科杜鹃属下的一个种。