Rhododendron laetum J.J.Sm.

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'Rhododendron laetum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-laetum/). Accessed 2020-05-25.

Genus

Other species in genus

Glossary

petiolate
Bearing a petiole.

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron laetum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-laetum/). Accessed 2020-05-25.

Shrub to 3 m, terrestrial; young stems laxly scaly. Leaves 7-10 x 3-6 cm, broadly elliptic to obovate, the apex mostly shortly acuminate to an acute point, sometimes obtuse and mucronate, the margin flat and entire, the base broadly tapering; upper surface at first brown-scaly, the scales quickly becoming silvery and obscure or the surface becoming glabrescent, midrib slightly raised in the basal half and grooved, then smooth, lateral veins 5-8 pairs, slightly raised; lower surface with the midrib raised for most of its length, the laterals smooth, often obscure, the scales pale brown, lobed to substellate, well scattered and slightly impressed. Flowers 5-9 per umbel, semi-erect to horizontal, calyx a scaly and shortly hairy 5-lobed disc; corolla yellow or yellow suffused with red or orange, often fragrant, funnel-shaped, sometimes with a few hairs at the base outside and laxly stellate-scaly, 6-7 x 4.5-6 cm; stamens 10, rather irregularly arranged in the mouth of the flower; ovary densely white-hairy and inconspicuously scaly, style hairy to just over half way, glabrous in the upper part. Royal Horticultural Society (1997)

Distribution  Indonesia Irian Jaya, Arfak Mts

Habitat 1,800-2,300 m

RHS Hardiness Rating H2

Conservation status Least concern (LC)

A lovely and well established species closely related to R. zoelleri. It differs in the shortly petiolate leaves, the petioles rarely more than 7 mm, the flowers generally opening yellow, even when they change with age and the anthers being short, up to 5 mm long, while in R. zoelleri the petioles are usually more than 7 mm, the flowers orange at the lobes from the beginning, and anthers usually more than 5 mm long. Royal Horticultural Society (1997)


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