FLORA OF VIETNAM Orchidaceae Thelasis pygmaea (Griff.) Blume
Quang Binh Prov., Tuyen Hoa Distr., Lam Hoa municipality, Hung village, around point 17°55′41”N 105°49′43”E.
Highly degraded primary and secondary evergreen broadleaved forest on very steep rocky slopes of remnant limestone hills composed with highly eroded marble-like crystalline limestone at elev. 200-300 m a.s.l.
Epiphyte on old trees on very steep rocky shady slope near to ridge top. Common.