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Erect shrub, c.0.5m; young shoots ferrugineous-tomentose. Leaves 2.5-8.5 x 0.5-2cm, oblong-lanceolate, more or less acuminate, margins revolute, upper surface dark green, lower surface white-pubescent, also with long crisped ferrugineous hairs on midrib and lamina, scales rimless, golden, 1-2× their own diameter apart, intermixed with red-brown glands; petioles 3-6mm. Flowers many, in a loose terminal umbellate corymb; calyx lobes obsolete; corolla rotate, white, c.7mm; stamens c.11; ovary densely glandular and pubescent, style glabrous.
Distribution E Russia (Sachalin).
RHS Hardiness H4.
Taxonomic note (Ledum macrophyllum Tolm.)
This species may be distinguished from the allied R. hypoleucum by the ferrugineous hairs on the lamina of the lower surface of the leaves.