Rhododendron yongii Argent

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'Rhododendron yongii' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-yongii/). Accessed 2020-01-18.

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron yongii' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-yongii/). Accessed 2020-01-18.

Shrub to 3m, predominantly terrestrial but occasionally epiphytic, young stems sparsely covered with pale brown scales. Leaves 6-11 x 2-5.5cm, elliptic to broadly elliptic, the apex rounded to slightly retuse, the margin entire and broadly recurved, the base broadly tapering; the upper surface at first minutely scaly, quickly glabrescent and shiny, the midrib impressed above, the laterals 5-8 pairs, very slightly impressed; underside with the midrib very strongly raised, the laterals only slightly so, rather sparsely covered in pale brown, deeply lobed scales. Flowers 5-12 per umbel, semi-erect to half-hanging; calyx a shallowly 5-lobed scaly disc; corolla dark red, strongly curved, cylindrical or narrowly funnel-shaped, 2-3.2 x 1-2cm, with a few scattered brown scales but numerous and more conspicuous white hairs outside; stamens 10, clustered on the upper side of the mouth; ovary densely white-hairy and scaly, the style glabrous.

Distribution Malaysia (Sabah and Northern Sarawak from Mt Kinabalu to Mt Mulu).

Habitat 1,500-2,100m.

RHS Hardiness H1b.

A lovely species with intense, blood red flowers which shine brilliantly when the sun is behind them. There are two distinct forms in cultivation at present: one tall and straggly with good foliage from Mt Mulu; the other from Mt Alab is much more compact but subject to leaf burn.


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