Rhododendron rugosum Low ex Hook.f.

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'Rhododendron rugosum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-rugosum/). Accessed 2020-08-15.

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New article for Trees and Shrubs Online.

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'Rhododendron rugosum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-rugosum/). Accessed 2020-08-15.

Shrub or small tree to 8 m, mostly terrestrial but also found epiphytically; young stems rather scabrid at first with brown scales that quickly fall. Leaves 6-10 x 3-5.5 cm, ovate or broadly to narrowly elliptic often strongly concave, the apex broadly pointed or shortly acuminate, the margin entire and slightly reflexed, the base broadly cuneate to rounded; upper surface with strongly impressed midrib throughout its length and about 8 pairs of strongly impressed laterals, at first brown-scaly above but very quickly glabrescent; below all veins distinct and strongly raised, with a moderately dense covering of dendroid brown scales which fall off at a touch and in old leaves may only be found in protected corners. Umbels 8-14 flowered, the flowers hanging or half hanging; calyx a low scaly and hairy ring; corolla pink to purplish pink (rarely reported as red), tubular campanulate, 2.5-3.5 x 2.5-3 cm, with fine white hairs on the tube and hairs and scales on the lobes, the scales sometimes grouped at the base of the lobes; stamens 10, irregularly arranged but predominantly on the lower side of the mouth; ovary densely white-hairy and with some silvery scales, style glabrous. Royal Horticultural Society (1997)

Distribution  Malaysia Sabah and N Sarawak?

Habitat 2,000-3,500 m

RHS Hardiness Rating H2

Conservation status Least concern (LC)

Often confused with R. acuminatum q.v. It is a most attractive plant with glowing pink flowers. Royal Horticultural Society (1997)

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