FLORA OF VIETNAM Orchidaceae Thrixspermum formosanum (Hayata) Schltr.
Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the SW of Na Nheo village (in the vicinity of point 21°58′39′'N, 104°14′35′'E). Primary closed evergreen broad-leaved submontane forest on steep granite and quartzite slopes at elev. 800-1200 m a.s.l. Epiphyte on high tree. Flowers odorless; tepals yellow, lip white with fine violet spotting. Rare.