FLORA OF LAOS Orchidaceae Collabium chinense (Rolfe) Tang et F.T.Wang
Kham Mouan Prov., Bounlapha Distr., Thong Sam village, Hinnam No Protected Area, Pu Pha Song Mt. composed by sandstone, around point 17°35′13.2”N 105°47′49.8”E.
Primary evergreen broad-leaved and mixed forest on W macroslope at elevation from 500 m to the mountain top elevated to 1425 m.
Terrestrial herb in dense forest at elevation 900 m. Leaves uniform green. Not common.