FLORA OF VIETNAM Fam. Urticaceae Pellionia sp. N. Vietnam, Lang Son prov., Huu Lung distr., Huu Lien municipality (N 21°40' E 106° 22'). Primary evergreen broad-leaved wet forest on steep slopes of remnant karst limestone ridge at elev. 400- 450 m a .s .l. Lithophytic forb up to 0.4 m hg on shady cliffs of N exposition. Not rare.N NTH 3263 01 Oct . 1999 Collectors N.T. Hiep , N.Q. Binh, L. Averyanov, P. Gribb.