Notes R.B.G. Edinb. 9: 274 (1916)
Verified by:
Tree, 6-12m. Leaves oblanceolate to broadly elliptic, 20-60(-70) x 8-28(-30)cm, 2.2-2.8 x as long as broad, apex rounded or retuse, minutely apiculate, base rounded, upper surface glabrous, lower surface with a silvery compacted and agglutinated indumentum; petioles 3-5cm, with a silvery agglutinated indumentum. Inflorescence 15-20-flowered; rhachis 30-65mm; pedicels 30-60mm, densely villous-tomentose. Calyx c. 2mm, lobes minute, triangular, tomentose. Corolla 8-10-lobed, ventricose-campanulate, pale creamy white with a crimson blotch at base, 40-60mm. Stamens 18-20. Ovary densely rufous-tomentose. Capsule 40-70 x 14-17mm, slightly curved.
NE Upper Burma, China (W Yunnan, SE Xizang)
Mixed forests
R. sinogrande Balfour f. & W. W. Smith var. boreale Tagg & Forrest, Notes R.B.G. Edinb. 15: 119 (1926). Type: China, SE Xizang, Tsarong, W of Chamatong, Salween/Kiu-chiang divide, 13000 -14000ft, vi 1922, Forrest 21705 (holo. E).
Chamberlain, D.F. (1982) A Revision of Rhododendron II. Subgenus Hymenanthes. Notes From the Royal Botanic Garden Edinburgh 39(2):245