Rhododendrons

Rhododendron sulfureum
Boothia subsection
Epithet: sulphur-coloured
AM 1937 (Lochinch),as R.commodum, flowers sulphur yellow
H2/3
Height: to 1.5m, often epiphytic.
Flowers: 4-8/truss, campanulate, 13-20mm long, bright or deep yellow, bright or deep sulphur-yellow, or greenish yellow.
March - April.
Leaves: obovate, oblong-obovate, elliptic or oval, 26-86 x 13-42mm, upper surface bright or dark green, underside glaucous, densely scaly.
Distribution: NE Upper Burma, W & NW Yunnan 2150 - 3850m
Large calyx but small flowers.