FLORA OF VIETNAM Orchidaceae Juss. Paphiopedilum hirsutissimum var. esquirolei (Schltr.) Karasawa et Saito
N. Vietnam, Thanh Hoa prov., Ba Thuoc distr., Co Lung municipality, territory of Pu Luong protected area, near Co Lung village (20°27′28′'N, 105°12′18′'E). Primary broad-leaved evergreen forest on very steep rocky slopes and cliffs of remnant highly eroded karst limestone ridge at elev. 450-550 m a.s.l. Lithophytic herb on vertical cliffs. Flowers of typical coloration. Locally very common.