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 top of remnant mountains composed with crystalline highly eroded marble-like limestone at elevation 704 m a.s.l.
Terresterial orchid.
HLF 533 21 Dec. 2002.
Coll. Nguyen Tien Hiep, Jacinto Regalado, Duong Van Xy, Bang Tien Sy Grant from Henry Luce Foundation.