FLORA OF VIETNAM Orchidaceae Epigeneium labuanum (Lindl.) Summerh.
Vietnam, Ha Giang Prov., Bac Me Distr., Phieng Luong Municipality, about 1.5 km to SW of Phieng Luong Municipality headquarter (22°39′29″N, 105°19′35″E).
Heavily logged primary closed evergreen broad-leaved forest along rocky streamlet valley at the base of steep slopes of mountains composed with solid highly eroded crystalline and partially shale limestone at elev. about 900 m a.s.l.