Kindly sponsored by
Peter Norris, enabling the use of The Rhododendron Handbook 1998
New article for Trees and Shrubs Online.
'Rhododendron dianthosmum' from the website Trees and Shrubs Online (treesandshrubsonline.
Shrub up to 2 m, epiphytic, young stems densely stellate-dendroid scaly at first but quickly rather glaucous, glabrescent. Leaves 9-14 x 3-6 cm, elliptic or broadly elliptic, the apex obtuse or shortly sub-acuminate-attenuate, margin slightly recurved, the base broadly tapering to rounded; upper surface at first brown-scaly, later rough with persistent epidermal tubercles, midrib slightly raised; lower surface with the midrib and lateral veins somewhat raised, scales deeply divided, dendroid, from pronounced and persistent epidermal tubercles. Flowers 4-6 per umbel, more or less horizontal; calyx a scaly ring; corolla white with 6-7 lobes, strongly smelling of carnations, tubular to tubular-funnel-shaped, conspicuously pouched at the base, 5-7 x 2.5-4 cm, glabrous outside; stamens 12-14, irregularly exserted from the mouth; ovary covered with forward pointing hairs and (obscurely) with scales, style hairy in the lower glabrous towards the top. Royal Horticultural Society (1997)
Distribution Indonesia Irian Jaya, Cycloop Mts
Habitat 500-1,400 m
RHS Hardiness Rating H2
Conservation status Vulnerable (VU)
Close to R. hyacinthosmum but that species has larger flowers with 6-7-lobed corollas. Royal Horticultural Society (1997)