Rhododendron × planecostatum (Sleumer) Argent A.L.Lamb & Phillipps

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Kindly sponsored by
Peter Norris, enabling the use of The Rhododendron Handbook 1998

Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron × planecostatum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-x-planecostatum/). Accessed 2021-10-21.

Genus

Other taxa in genus

Glossary

hybrid
Plant originating from the cross-fertilisation of genetically distinct individuals (e.g. two species or two subspecies).

Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron × planecostatum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-x-planecostatum/). Accessed 2021-10-21.

Shrub to 1 m, epiphytic or terrestrial, young stems smooth with fine scales at first. Leaves 4-5 x 1.5-1.8 cm, elliptic to obovate, the apex acute, often acuminate, the margin entire, flat, the base tapering, upper surface at first minutely scaly, quickly glabrescent and shiny, main vein slightly raised, laterals 5-7 pairs, smooth, rather obscure; lower surface with the midrib more or less flat and the laterals obscure, scales rather sparse, lobed with small centres. Flowers 3-6 per umbel, horizontal to half hanging; calyx a low scaly ring; corolla red, cylindrical to narrowly funnel-shaped, 2-2.5 x 1.3-1.8 cm, glabrous; stamens 10 arranged around the mouth of the flower, ovary glabrous, style glabrous. Royal Horticultural Society (1997)

Distribution  Malaysia Sabah, Kinabalu and Crocker Range

Habitat 1,300-1,700 m

RHS Hardiness Rating H2

A hybrid originally described as a species and often sold as such. It is cheerful, vigorous and free flowering. Royal Horticultural Society (1997)