FLORA OF VIETNAM Plants of Phong Nha - Ke Bang National Park Orchidaceae Cymbidium dayanum Rchb.f.
Vietnam, Quang Binh Prov., Bo Trach Distr., Hung Trach Municipality, Khe Ba Tanh locality, around point 17°27′24′'N, 106°23′14′'E at elev. 600-700 m a.s.l.
Slightly logged primary closed broad-leaved evergreen forest on slopes of mountains composed with shale, sandstone and occasionally granite.
Epiphyte (on Dracontomelon duperreanum, Bischofia javanica, Michelia sp., Chisocheton paniculatus, Cinnamomum sp., Pometia pinnata, Pterospermum spp., Duabanga grandiflora) on very steep rocky granite slope of stream valley along stream. Locally common.