FLORA OF VIETNAM Orchidaceae Juss. Phaius longicruris Tsi
N. Vietnam, Thai Nguyen prov., Dong Hy distr., Tan Long municipality, vicinities of Mo Ba village (21°46′26′'N, 105°52′25′'E). Primary wet broad-leaved evergreen closed forest (with Burettiodendron hsienmu as a main dominant) on remnant highly eroded limestone ridge at elev. 400-550 m a.s.l. Terrestrial herb among shady rocks. Not common.