FLORA OF VIETNAM Orchidaceae Holcoglossum wangii Christenson
Vietnam, Ha Giang Prov., Quan Ba Distr, about 2 km to the NE of Quan Ba town, around point 23°05′49″N, 105°01′00″E at elevation about 1150 m a.s.l.
Primary coniferous forest with Calocedrus rupestris, Callitropsis vietnamensis and Pseudotsuga sinensis on rocky highly eroded marble-like limestone remnant mountains.
Epiphyte on shady wet mossy slope. Tepals white, lip side-lobes yellow with purple-brown stripes, lip white , epichile at the base with purple marks. Not rare.