FLORA OF VIETNAM Pentaphragmaceae Pentaphragma sp. ?
N. Vietnam, Tuyen Quang prov., Na Hang distr., Thanh Tuong municipality, near Ban Bung village (22°16′26′'N, 105°25′58′'E). Primary broad-leaved evergreen wet forest on very steep limestone/shale slope of mountain stream canyon at elev. 300-450 m a.s.l. Terrestrial herb 15-30 cm hg in wet shady slope of mountain river canyon. Not rare.