FLORA OF VIETNAM Plants of Phong Nha - Ke Bang National Park Orchidaceae Cymbidium dayanum Rchb.f.
Vietnam, Quang Binh Prov., Bo Trach Distr., Tan Trach Municipality, about 0.5 km to E of A Rem village (17°23′32′'N, 106°12′46′'E).
Fractionally logged primary closed broad-leaved forest on steep slopes of rocky ridge composed with solid marble-like highly eroded solid crystalline limestone at elevation about 750 m a.s.l.
Epiphyte on high tree (Lauraceae?). Locally common.