FLORA OF VIETNAM. Fam. Urticaceae. Pellea sp. ?. N. Vietnam, prov. Cao Bang, distr. Ha Lang, municipality Thang Loi,. vicinities of Lung Sam village (N 22°45' E 106°42'). Secondary wet. evergreen broadleaved forest with remnants of primary elements on. steep slopes and bluffs of karst remnant limestone ridge at 500-550 m. elev. Terrestrial and lithophyte herb on wet mossy rocks. Not common. No CBL 1653   23 April 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.