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Dwarf shrub, to 0.4m or more; young shoots and petioles densely covered with broad flattened brown adpressed hairs. Leaves of one kind, persistent, 1.7-2.5 x 1-1.5cm, obovate to elliptic, apex bluntly mucronate, both surfaces stiffly hairy, especially on the midrib. Pedicels densely and stiffly adpressed-hairy. Flowers 1-2 per inflorescence; calyx 2-3mm; corolla white to purplish-pink, with darker flecks, broadly funnel-campanulate, c.30mm; stamens 9-10; ovary stiffly hairy, style glabrous.
Distribution S Japan, (Kyushu, Ryukyu Islands).
RHS Hardiness H2-3.
Taxonomic note (incl. R. tamurae [makino] masamune)
This is a tender species that is affected by frosts. It rarely flowers in Britain when grown outside.