FLORA OF VIETNAM Plants of Phong Nha - Ke Bang National Park Orchidaceae Rhomboda sp. (Rh. petelotii aff.?)
Vietnam, Quang Binh Prov., Bo Trach Distr., Tan Trach Municipality, vicinities of A Rem village (17°23′22′'N, 106°12′47′'E).
Slightly logged primary closed evergreen coniferous forest (with Calocedrus rupestris) on steep slopes and tops of rocky ridge composed with solid marble-like highly eroded stratified crystalline limestone at elevation about 800-900 m a.s.l.
Lithophytic and terrestrial creeping herb in deep shade. Leaves deep green with three white nerves uniform light green below. Not common.