Notes R.B.G. Edinb. 9: 263 (1916).
Verified by:
Shrub or small tree, 3-10m. Leaves oblong-obovate to oblanceolate, (14-)20-30(-40) x 5.2-12cm, 2.2-2.8(-3.6) x as long as broad, apex rounded, base cuneate, upper surface glabrous, lower surface with a silvery compacted and agglutinated indumentum; petioles l-2cm, strongly flattened and winged, sparsely tomentose to glabrescent. Inflorescence 12-20-flowered; rhachis up to 25mm; pedicels 30-40mm, sparsely floccose-tomentose. Calyx l-2mm, tomentose. Corolla 7-8-lobed, obliquely campanulate, pale yellow or white flushed with pink, to pink with crimson flecks and a basal blotch, 35—50mm. Stamens c. 16. Ovary covered with a dense buff tomentum. Capsule 30-40 x 6-10mm, usually curved.
China (SE Xizang, NW Yunnan)
Pine and mixed forest
R. coryphaeum Balfour f. & Forrest, Notes R.B.G. Edinb. 12: 100 (1920). Type: China, W NW Yunnan, Mekong/Salween divide, 11-12000ft, vi 1918, Forrest 16561 (holo. E). R. semnum Balfour f. & Forrest, ibid. 13: 59 (1920). Type: China, W NW Yunnan, Mekong/Salween divide, vi 1917, Forrest 14233 (holo. E; iso. BM)
Chamberlain, D.F. (1982) A Revision of Rhododendron II. Subgenus Hymenanthes. Notes From the Royal Botanic Garden Edinburgh 39(2):247