FLORA OF VIETNAM Pentaphragmaceae Pentaphragma sp.
N. Vietnam, prov. Ha Giang, distr. Yen Minh, municipality Du Gia, E slopes of Phu Tha Ca mountain system at 1600-1800 m elev. (N 23°56′ E 105°13′). Primary evergreen broadleaved very wet mountain forest on shale-quartzite very steep slopes. Lithophyte herb on vertical shady wet quartzite cliffs. Flowers white. Common.
CBL 2075 03 May 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)