S. Vietnam, Prov. Kon Tum, Distr. Dak Gley, about 12 km to N of Dak Gley town (24 km by road), near Mang Khen village. Primary wet mountain evergreen forest at 1100-1200 m alt.
Prostrate herb rooting at nodes. In wet open places along streams. Leaves brownish or grey. Flowers yellow or pinkish-yellow with orange veins. Rare.
VH 1753 17.11.1995 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