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. Secondary wet mountain evergreen forest rich in primary elements at 1100-1200 m alt.
Herb up to 1.5 m high. In wet open places, not common. Flowers pale light violet.
VH 1722 16.11.1995
International Botanical Expedition of the U.S.A. National GeographicSociety (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