FLORA OF VIETNAM Gesneriaceae Dumort. Slackia tonkinensis Pell. S. Vietnam, Prov. Kontum. SW slopes of Ngoc Linh mountain system at 1600-1800 m alt. Primary evegreen forest. Herb up to 0.1 m high. Flowers very light violet. VH 459 06.03.1995 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