FLORA OF VIETNAM
Orchidaceae
Thelasis pygmaea (Griff.) Blume

N. Vietnam, Prov. Quang Binh, distr. Minh Hoa, 72 km to NWW from Dong Hoi, municipalite Thong Hoa, vicinities of Yen Son village, limestone massif Ke Bang (N 17°40′ E 105°57′). Primary evergreen open broadleaved dry forest on top of limestone mesas at 450-500 m alt.
Epiphyte. Flowers yellowish-white. Common, especially on tops
of ridges and mesas.
VH 4642 16.05.1997
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)

Collectors: L. Averyanov, N.T. Hiep, P.K. Loc