N.Vietnam, Bac Kan Prov., Ba Be Distr., Nam Mau Municipality Nam Dai village, Ba Be National Park around point 22025′651′'N 1050 35′ 613′'E. Secondary closed evergreen broad-leaved forest on slopes and top of remnant mountains composed with crystalline highly eroded marble-like limestone at elevation 704 m a.s.l.
Orchid epiphyte on limestone, very common.
HLF 531 21 Dec. 2002.
Coll. Nguyen Tien Hiep, Jacinto Regalado, Duong Van Xy, Bang Tien Sy Grant from Henry Luce Foundation.