Notes R.B.G. Edinb. 8:200 (1914)
WFO ID: wfo-0001048192
IPNI ID: urn:lsid:ipni.org:names:332274-1
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Shrub, l-2(-4) m. Leaves densely lepidote, 11-70 x 5-26 mm, narrowly to broadly elliptic, apex acute, obtuse or rounded, strongly mucronate, base cuneate, undersurface uniformly fawn to deep rust or occasionally with darker spots, the scales contiguous or overlapping. Inflorescence up to 6-flowered, pedicels 2-13 mm, lepidote. Calyx (2-)5-8(-12) mm, lobes usually oblong, apex rounded to acute, with pale scales forming a central band, margin long-ciliate, sometimes with a few scales. Corolla deep purple to rose-lavender, often with darker markings, rarely almost white, funnel-shaped, (12-)22-31 mm, tube (5-)10-16 rmn, pubescent within and often ouside also, lepidote or elepidote outside. Stamens 10, pubescent in the lower part, varying in length. Ovary lepidote, style declinate, longer than or rarely equal to stamens, pubescent towards the base. Capsule lepidote, ovoid, up to 14 mm
China (N & W Yunnan, SW Sichuan)
R. ravum Balfour f. & W. W. Smith, Notes R.B.G. Edinb. 9:270 (1916). Type: China, Yunnan, mts. in NE of the Yangtze bend, 11000 ft, vii 1913, Forrest 10423 (holo. E). R. cinereum Balfour f. in Millais, Rhododendrons 145 (1917) nom. nud. R. cheilanthum Balfour f. & Forrest, Notes R.B.G. Edinb. 11:32 (1919). Type: China, Yunnan, mts in NE of Yangtze bend, 10-11000 ft, vii 1913, Forrest 11736 (holo. E). R. sclerocladum Balfour f. & Forrest, op. cit. 11:133 (1919). Type: China, Yunnan, mts of Chungtien plateau, 11000 ft, vii 1914, Forrest 12665 (holo. E)
Cullen, J. (1980) A Revision of Rhododendron 1: Subgenus Rhododendron sections Rhododendron & Pogonanthum. Notes from the Royal Botanic Garden Edinburgh 39(1):95