Convolvulaceae Juss. Argyreia lawii C.B.Clarke S. Vietnam, Prov. Kontum. Evergreen close primary forest along mountain river on W slope of Ngoc Linh mountain system at 1300-1450 m near Long Nam village. Wine near 8 m lg. VH 1103 03.04.1995 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5094-93) Participants: L. Averyanov, N.T. Ban, N. Q. Binh, A. Budantzev, L. Budantzev, N.T. Hiep, D.D. Huyen, P.K. Loc, N.X. Tam, G. Yakovlev