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Shrub or small tree, 0.6-7.5 m; young shoots lacking bristles. Leaves 5-10 x 2-4 cm, obovate, apex abruptly acute, margin not ciliate, upper surface with midrib impressed, lower surface with the brown unequal scales touching or to a half their own diameter apart. Flowers 1-5, in a loose terminal inflorescence, not scented; calyx lobes 1-3 mm, usually setose; corolla white with a yellowish basal blotch, sometimes tinged pink, funnel-shaped, 45-65 mm, outer surface scaly throughout, pubescent at base; stamens 10; ovary scaly, tapering into the glabrous style. Flowering March-April. Royal Horticultural Society (1997)
Distribution Myanmar N China Yunnan
Habitat 1,800-4,000 m
RHS Hardiness Rating H3
Awards FCC 1936 (L. de Rothschild, Exbury); flowers white, with a pale yellow streak.
Conservation status Least concern (LC)
Taxonomic note (incl. R. scottianum Hutch. & R. supranubium Hutch.) Royal Horticultural Society (1997)
This species is closely allied to R. ciliicalyx (q.v.). Royal Horticultural Society (1997)