Rhododendron nervulosum Sleumer

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'Rhododendron nervulosum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-nervulosum/). Accessed 2020-09-23.

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New article for Trees and Shrubs Online.

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'Rhododendron nervulosum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-nervulosum/). Accessed 2020-09-23.

Shrub to 1.5 m, mostly terrestrial; young twigs only very finely scaly quickly glabrescent. Leaves 5.5-8 x 0.7-1.5, narrowly elliptic to almost linear, the apex acute, the margin entire, slightly revolute in the basal half, the base narrowly tapering; the upper surface at first finely pale brown-scaly, quickly glabrescent, midrib slightly impressed in the basal half, smooth in the upper part, lateral veins 4-6 pairs, smooth; lower surface with the midrib very slightly raised throughout its length, the laterals smooth, the scales small, lobed and sparse. Flowers 1-6 per umbel, horizontal to half hanging; calyx a low minutely scaly ring; corolla opening orange and darkening to reddish with age, funnel-shaped, 2.5-4 x 2-3 cm, glabrous outside; stamens 10, slightly dimorphic, arranged regularly around the mouth of the flower; ovary densely white-hairy and with small brown scales, style glabrous. Royal Horticultural Society (1997)

Distribution  Malaysia Borneo (Sabah, Kinabalu to Mt Lotung)

Habitat 2,500-3,000 m

RHS Hardiness Rating H2

Conservation status Vulnerable (VU)

This is closely allied to R. stenophyllum but may be distinguished by its broader leaves. Royal Horticultural Society (1997)

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