Piperaceae C. A. Agardh Piper densum Blume S. Vietnam, Prov. Kontum. Evergreen primary forest along stream (Dak Mek river system) at 850-900 m alt. on W slope of Ngoc Linh mountain system abowe Muong Hoong village. Shrub up to 2 m high in shadow places. Flowers white. VH 1353 14.04.1995 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