FLORA OF VIETNAM. Fam. Convallariaceae. Tupistra sp. N. Vietnam, prov. Ha Giang, distr. Yen Minh, municipality Du Gia, E. slopes of Phu Tha Ca mountain system at 1100-1200 m elev. (N 23°56' E. 105°13'). Primary evergreen broadleaved very wet mountain forest on. shale very steep slopes. Terrestrial and lithophyte herb on steep. rocky slopes. Common. No CBL 2054   03 May 1999. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 6300-98). . Collectors: P.K.Loc, P.H.Hoang, Averyanov L.