FLORA OF VIETNAM Orchidaceae Cleisostoma williamsonii (Rchb.f.) Garay ?
N.Vietnam, Thanh Hoa Prov., Quan Hoa Distr., Phu Le Municipality, Hang village, around point 20°31′13′'N, 105°05′45′'E. Primary and secondary evergreen seasonal broad-leaved closed lowland forest with bamboo on top of rocky ridge composed with crystalline marble-like highly eroded limestone at elev. 750-850 m. Epiphyte. Occasional.