FLORA OF VIETNAM Plants of Phong Nha - Ke Bang National Park Orchidaceae Thrixspermum pauciflora (Breda) J.J.Smith ?
Vietnam, Quang Binh Prov., Quang Ninh Distr., Truong Son Municipality, around point 17°26′50′'N, 106°23′41′'E at elev. about 600 m a.s.l. near U Bo forestry protection station.
Slightly logged primary closed broad-leaved evergreen forest on steep slopes of mountains composed with shale and sandstone along stream canyon.
Epiphyte on high trees (Hopea mollissima, Schima wallichii, Diplopanax vietnamensis, Choerospondias axillaris, Podocarpus neriifolius, Dacrycarpus imbricatus, Engelhardia roxburghiana). Not rare.