FLORA OF VIETNAM Orchidaceae Didymoplexis pallens Griff.?
N.Vietnam, Bac Kan Prov., Na Ri Distr., Liem Thuy Municipality, village Lung Vai, around point 21°57′18′'N, 106°06′12′'E, at elevation 500-700 m a.s.l.
Primary broad-leaved evergreen closed wet forest on very steep slopes and cliffs of rocky ridges and mesae composed with white solid marble-like crystalline limestone.
Terrestrial achlorophyllous white saprophyte in fruits on lime-shale slope on foothill of limestone ridge ate elevation about 500 m a.s.l. Rare.