FLORA OF VIETNAM Orchidaceae Didymoplexiopsis khiriwongensis Seidenf.
N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Kim Municipality, Rao Bun stream around point 18°23′39′'N, 105°15′12′'E. Primary broad-leaved evergreen closed forest on very steep mountain slopes composed with shale at elevation about 350-450 m a.s.l.
Small achlorophyllous gray-yellowish saprophyte. Flowers white, light fragrant, lip with white, finely gray spotted callus above and with yellow-brown spot below. Occasionally common.