Kindly sponsored by
Peter Norris, enabling the use of The Rhododendron Handbook 1998
New article for Trees and Shrubs Online.
'Rhododendron nigroglandulosum' from the website Trees and Shrubs Online (treesandshrubsonline.
Shrub or small tree, 3-5 m; young shoots tomentose and with blackish purple stalked glands. Leaves 12-17 x 4-5 cm, lanceolate to oblong, apex apiculate, lower surface with a light reddish brown, loosely lanate, one-layered indumentum composed of ramiform hairs; petioles floccose-tomentose, and with black glands. Flowers 8-10 in a dense truss; calyx c.1mm; corolla deep pink at first, later yellowish pink, with conspicuous purple flecks, campanulate, nectar pouches lacking; ovary stipitate-glandular and tomentose, style glabrous. Flowering May. Royal Horticultural Society (1997)
Distribution China Sichuan
Habitat c.3,500 m
RHS Hardiness Rating H7
Conservation status Vulnerable (VU)
A rare species in cultivation that may be distinguished from its immediate relatives, R. bureavii and R. elegantulum, by its small calyx. The black glands on the young shoots and petioles are also diagnostic. Royal Horticultural Society (1997)