FLORA OF VIETNAM
Plants of Phong Nha - Ke Bang National Park
Orchidaceae
Oberonia kwangsiensis Seidenf. ?

Vietnam, Quang Binh Prov., Minh Hoa Distr., Thuong Hoa Municipality, about 1-1.5 km to SW of Ban On village (17°40′21′'N, 105°58′00E). Ca Xach mountain (17°39′20′'N, 105°57′42′'E).

Primary closed evergreen broad-leaved gnarled stunted forest along rocky ridge composed with solid marble-like highly eroded crystalline limestone at elevation 600-800 m a.s.l.

Lithophyte and epiphyte on old trees (Phyllanthus sp., Nageia fleuryi, Pistacia cucphuongensis, Memecylon sp., Alstonia guangxiensis, Garcinia sp., Quercus sp.). Common.

HAL 5946 20 January 2005.

Collectors: L.Averyanov, P.K.Loc, P.V.The, A.Averyanova, N.T.Vinh, N.Q.Vinh, N.T.Binh.