FLORA OF VIETNAM Orchidaceae Eria gagnepainii Hawkes & Heller
N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Hong Municipality, around point 18°34′06′'N, 105°11′40′'E. Primary broad-leaved dry closed evergreen forest on very steep mt slopes of Khe Sinh stream canyon and along ridge composed with shale at elev. 700-800 m a.s.l. near Laotian border.