FLORA OF LAOS Orchidaceae Tropidia angulosa (Lindl.) Blume
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 to 0.4 m tall on shady slopes at elevation 400-900 m. Common.