Kindly sponsored by
Peter Norris, enabling the use of The Rhododendron Handbook 1998
New article for Trees and Shrubs Online.
'Rhododendron yongii' from the website Trees and Shrubs Online (treesandshrubsonline.
Shrub to 3 m, predominantly terrestrial but occasionally epiphytic, young stems sparsely covered with pale brown scales. Leaves 6-11 x 2-5.5 cm, 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 1-2 cm, 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. Royal Horticultural Society (1997)
Distribution Malaysia Sabah and Northern Sarawak from Mt Kinabalu to Mt Mulu
Habitat 1,500-2,100 m
RHS Hardiness Rating H2
Conservation status Least concern (LC)
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. Royal Horticultural Society (1997)