Kindly sponsored by
Peter Norris, enabling the use of The Rhododendron Handbook 1998
New article for Trees and Shrubs Online.
'Rhododendron calvescens' from the website Trees and Shrubs Online (treesandshrubsonline.
Shrub, 1-2.5 m; young shoots and petioles shortly stalked-glandular, also with a detersile dendroid indumentum. Leaves 6-10 x 2.5-4 cm, elliptic to ovate, lower surface with a few stalked glands and a thin detersile indumentum that is sometimes restricted to the vicinity of the midrib at the base. Flowers c.5, in a lax truss; calyx 2-3 mm; corolla white flushed rose, with a few crimson flecks, funnel-campanulate, without nectar pouches, c.35 mm; ovary densely glandular, also with a varying proportion of rufous dendroid hairs, style glabrous. Royal Horticultural Society (1997)
Distribution China SE Tibet, NW Yunnan
Habitat 3,350-4,550 m
RHS Hardiness Rating H4
Conservation status Vulnerable (VU)
R. calvescens, which may well be a hybrid of R. selense, is rare in cultivation. Royal Horticultural Society (1997)
Leaves 1.5-2.5 x as long as broad; pedicels 15-20mm.
Leaves c.3× as long as broad; pedicels 20-28mm.