FLORA OF VIETNAM Orchidaceae Paphiopedilum micranthum Tang & F.T.Wang
N.Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi Municipality, village Phia Khao, around point 22°16′10′'N, 105°31′01′'E at elevation 700-850 m a.s.l. (Tang Gia mountain).
Primary broad-leaved evergreen closed forest on very steep slopes and cliffs near and on tops of rocky ridge composed with solid marble-like stratified limestone.
Lithophytic and terrestrial rosette herb on shelves of vertical shady cliffs near top of ridge. Leaves deep green / light green tessellated above, heavily deep dirty violet marked below. Rare.