FLORA OF VIETNAM Orchidaceae Eria rhomboidalis Tang & F.T.Wang
Son La Prov., Van Ho Distr., Xuan Nha Municipality, Muong An village, territory of Xuan Nha natural reserve.
Primary broad-leaved evergreen humid forest on very steep slopes and cliffs of remnant mountain composed by solid highly eroded crystalline limestone at elevation 800-1000 m a.s.l. around point 20°45′06.5″N 104°46′37.8″E.
Creeping lithophytie and occasionally epiphytie on very steep mossy shady rocky slope and on cliffs. Very common.