Rhododendron citriniflorum I. B. Balf. & Forrest

Two varieties occur in China; intermediate between them is subsp. rubens Cowan (Notes Roy. Bot. Gard. Edinburgh 20: 76. 1940; R. horaeum I. B. Balfour & Forrest var. rubens (Cowan) Davidian), described from Xizang. Rhododendron chaetomallum I. B. Balfour & Forrest var. xanthanthum Tagg & Forrest (Notes Roy. Bot. Gard. Edinburgh 15: 308. 1927; R. xanthanthum (Tagg & Forrest) D. F. Chamberlain), described from Xizang, is almost certainly a hybrid of R. citriniflorum.

Dwarf shrubs, 0.6–1.2 m tall; bark gray-brown, smooth, usually falling off in flakes; young shoots glabrous; bud scales persistent. Petiole flat, usually winged, 5–10 mm, white-tomentose when young; leaf blade leathery, oblong-obovate, 2.5–6 × 1.5–2 cm; base cuneate; margin revolute; apex obtuse, rounded, apiculate; abaxial surface densely gray-brown tomentose, hairs dendroid; adaxial surface green, glabrous; midrib grooved adaxially; lateral veins 8-paired, impressed. Inflorescence umbellate, 2–6-flowered; rachis ca. 3 mm, tomentose and glandular. Pedicel 1–2.6 cm, eglandular to densely glandular-setose; calyx 2–12 mm, glandular or woolly, glandular-ciliate; corolla tubular-campanulate, yellow or orange to carmine, ca. 3.5 cm, glabrous; lobes 5, ovate, ca. 1.3 × 1.8 cm, emarginate; stamens 10, 2–2.7 cm, filaments pubescent at base; ovary with truncate apex, ca. 5.6 mm; woolly-tomentose and glandular-setose; style ca. 2.4 cm, glabrous; stigma capitate. Capsule 8–12 mm. Fl. Jun–Jul.

SE Xizang, NW Yunnan.

Alpine meadows, cliffs; 3600–5400 m.

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

Rhododendron citriniflorum là một loài thực vật có hoa trong họ Thạch nam. Loài này được Balf. f. & Forrest miêu tả khoa học đầu tiên năm 1919.

橙黄杜鹃（学名：Rhododendron citriniflorum），为杜鹃花科杜鹃属下的一个变种。