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Shrub to 1.5m, terrestrial or epiphytic, young twigs very smooth with a few small scales. Leaves 3-7 x 0.7-2cm, narrowly elliptic to narrowly oblanceolate, the apex acute or acuminate, sometimes with the extreme tip rounded, margin flat, the base narrowly tapering; upper surface with fine scattered brown scales at first, soon glabrescent, the midrib raised in the lower half, smooth above, the laterals obscure; the lower surface with the midrib almost completely smooth, the laterals obscure, the scales rather sparse and small, brown, lobed to substellate with small centres. Flowers 3-6 per umbel, horizontal to half-hanging; calyx a low disc; corolla whitish cream, yellow or red, sometimes sweetly scented, broadly funnel-shaped, glabrous outside; stamens 10, arranged all round the mouth of the flower; ovary and style glabrous.
Distribution Indonesia (Sumatra).
RHS Hardiness H1b.
One of the parents of some of the old Veitch hybrids but not one of the more flamboyant species.