FLORA OF VIETNAM
Plants of Phong Nha - Ke Bang National Park
Orchidaceae
Thelasis pygmaea (Griff.) Blume

Vietnam, Quang Binh Prov., Minh Hoa Distr., Thuong Hoa Municipality, about 2 km to E of Ban On village (17°40′21′'N, 105°58′00E).

Heavily logged primary and secondary closed evergreen broad-leaved forest and scrub on rocky ridge composed with solid and stratified marble-like highly eroded crystalline limestone at elevation 550-650 m a.s.l.

Epiphyte (on Pistacia cucphuongensis, Memecylon sp., Quercus sp., Allospondias lakonensis, Pometia pinnata, Aglaia sp., Pterospermum spp., Knema sp., Streblus macrophyllus) on high trees along tops of ridge. Not rare.

HAL 5858 18 January 2005.

Collectors: L.Averyanov, P.K.Loc, P.V.The, A.Averyanova, N.T.Vinh, N.Q.Vinh, N.T.Binh.