S. Vietnam, Prov. Kon Tum, Distr. Dak Gley, about 15-18 km to NW of Dak Gley town, near Mang Khen (Dak Che) village. Primary evergreen mountain very wet forest in deep stream canyon at 1000 m alt.
Prostrate herb rooting at nodes. In open wet place. Flowers blue. Rare.
VH 1936 23.11.1995
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5094-93)
Participants: L. Averyanov, N.T. Ban, A. Budantzev, L. Budantzev, N.T. Hiep, D.D. Huyen, P.K. Loc, G. Yakovlev