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Shrub, to 5m. Leaves 3-6.5 x 1.5-3.5cm, elliptic to narrowly elliptic, apex blunt or notched. Flowers slightly scented, single, borne laterally below vegetative buds, white with purple spots on upper lobes, rotate, tube short, lobes spreading, c.50mm across; stamens 5.
Distribution S China (Hong Kong, Guangdong).
RHS Hardiness H1b-2?.
Closely allied to R. ovatum and only doubtfully distinct.