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°17′31′'N, 105°31′51′'E, Cau Muc mountain at elevation 800-900 m a.s.l.
Primary broad-leaved evergreen closed forest on very steep slopes and cliffs near 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. Common.