Rhododendron retivenium Sleumer

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'Rhododendron retivenium' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-retivenium/). Accessed 2020-07-11.

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron retivenium' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-retivenium/). Accessed 2020-07-11.

Shrub to 3 m, usually terrestrial; young stems green or reddish, covered in flat substellate scales. Leaves 11-16 x 3-5 cm, narrowly elliptic, the apex acute, the margin more or less flat, the base narrowly tapering; upper surface at first silvery scaly, quickly glabrescent, the midrib raised near the base and impressed in the upper part, lateral veins 12-18 pairs, slightly raised; lower surface with the midrib raised below, lateral veins somewhat raised, with small, widely distributed, lobed, scales with small centres. Flowers 4-7 per umbel, more or less horizontally held; calyx a low scaly ring; corolla yellow or yellow flushed orange, usually sweetly scented, funnel-shaped, 3-6.5 x 3.5-7.5 cm, with a few scattered scales outside; stamens 10, loosely and irregularly arranged on the lower side of the mouth; ovary very finely hairy (when viewed with a strong lens) and with a very few scales, style glabrous or hairy at the very base. Royal Horticultural Society (1997)

Distribution  Malaysia Sabah (Mt Kinabalu and Mt Alab)

Habitat 2,000-2,700 m

RHS Hardiness Rating H2

Conservation status Least concern (LC)


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