FLORA OF VIETNAM Orchidaceae Paphiopedilum hirsutissimum (Lindl.) Stein var. esquirolei (Schltr.) Karasawa & Saito,
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Khuyn village, around point 20o26′31′'N, 105o14′55′'E. Primary evergreen seasonal broad-leaved and coniferous submontane forest on crystalline marble-like highly eroded limestone, tops of limestone ridge at elev. 700-800 m. Lithophyte. Very common.