Rhododendron robinsonii Ridl.

Shrub to 2.5 m, usually epiphytic, young stems at first finely scaly, quickly glabrescent. Leaves 8–16 × 4–6.5 cm, elliptic or broadly elliptic occasionally lanceolate, the apex acute, often acuminate, the margin entire, slightly revolute, the base broadly to narrowly tapering, sometimes slightly asymmetric; the upper surface with a strongly raised midrib in the basal half, the laterals 5–10 pairs only slightly raised or smooth, very finely scaly at first, quickly glabrescent; the lower surface with the midrib raised throughout its length, the laterals rather obscure, scales very small, brown, rounded to lobed. Umbels 4–12 flowered, erect to half-hanging; calyx disc-shaped sometimes with low lobes, almost glabrous; corolla yellow variably and sometimes heavily flushed orange, funnel-shaped, 3–3.5 × 3–3.5 cm, glabrous outside; stamens 10, somewhat irregularly arranged in the mouth of the flower; ovary glabrous, or with a few scales, the style completely glabrous. Royal Horticultural Society (1997)

Distribution  Malaysia West (from Perak to Selangor and in the Taiping Hills)

Habitat 1,000–1,800 m

RHS Hardiness Rating H2

Conservation status Least concern (LC)