Kindly sponsored by
Peter Norris, enabling the use of The Rhododendron Handbook 1998
New article for Trees and Shrubs Online.
'Rhododendron cumberlandense' from the website Trees and Shrubs Online (treesandshrubsonline.
Deciduous shrub, to 2 m; young twigs covered with eglandular hairs, rarely glabrous. Leaves (3-)4.5-7(-8.1) x (1.3-)1.8-2.9(-3.5) cm, lower surface glaucous, glabrous or with a few eglandular multicellular hairs. Flower bud scales with outer surface glabrous, margin ciliate at apex, glandular below. Pedicels covered with eglandular hairs rarely with gland-tipped hairs. Flowers with an acrid fragrance, appearing after the leaves have expanded, 3-7, in a shortened raceme; calyx 1-3 mm; corolla red, funnelform, tube expanding abruptly into the limb, 28-50 mm, outer surface densely covered with unicellular hairs and sparsely covered with gland-tipped hairs. Capsule with eglandular hairs. Royal Horticultural Society (1997)
Distribution United States Cumberland Mountains
Habitat above 900 m
RHS Hardiness Rating H6
Conservation status Least concern (LC)
This species is allied to R. canescens but may be distinguished by the flowers appearing after the leaves. It has been confused with R. x bakeri, a hybrid of R. flammeum and R. canescens (see under R. flammeum). Royal Horticultural Society (1997)