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Large shrub or small tree, 5-6m; bark rough. Leaves 26.5-35 x 10-14cm, obovate-oblanceolate, upper surface reticulate, lower surface with a dense two-layered indumentum, the upper layer agglutinated, patchy, often red-brown, composed of strongly fimbriate cup-shaped hairs, the lower compacted; petioles flattened and with a marked wing. Flowers 12-17, in a dense truss, 8-lobed, pale yellow, with a purple blotch, obliquely campanulate, nectar pouches lacking, 35-45mm; stamens 16; ovary densely tomentose.
Distribution China (NW Yunnan).
RHS Hardiness H4a.
R. rothschildii may have originated as a hybrid. It has a very restricted distribution in the wild.