FLORA OF VIETNAM
Orchidaceae Juss.
Paphiopedilum henryanum Braem

N. Vietnam, Tuyen Quang prov., Na Hang distr., Xuan Tam municipality, near Ban Cai village (22°29′18′'N, 105°19′47′'E). Primary broad-leaved evergreen dry forest on very steep slopes of highly eroded remnant limestone ridge at elev. 450-500 m a.s.l. Lithophyte herb on vertical shady cliffs composed with slaty stratified limestone mainly N and NW exposition. Rare.
HAL 244 22 March 2001
Collectors: P.K.Loc, N.X.Tam, L. Averyanov.

Plant flowered in November 2001