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Erect shrub, 0.5-1.lm; young shoots covered with a ferrugineous tomentum. Leaves 1.7-8 x 0.5-2cm, oblong-elliptic, apex acuminate, margins revolute, ciliate with long brown crisped hairs, upper surface dark green, with ferrugineous hairs, lower surface glaucous, more or less papillate, densely white-pubescent, scales rimless, golden, 1-3× their own diameter apart, midrib with long crisped ferrugineous hairs; petioles 2-7mm. Flowers numerous, in a loose terminal umbellate corymb; calyx lobes 1-2mm, orbicular; corolla white, rotate, 5-7mm; stamens 9-12; ovary ovoid, densely pubescent and scaly, style glabrous.
Distribution NE Russia, Japan.
RHS Hardiness H4.
Taxonomic note (Ledum hypoleucum Kom., L. palustre L. var. diversipilosum Nakai)
R. hypoleucum may be distinguished from the remaining species in Subsect. Ledum by the pubescent undersurfaces of the leaves, on which the longer ferrugineous hairs are restricted to the midrib.