Tay Ninh prov., Tan Bien Distr., Tan Binh Municipality, near Ta Not Forest Protection Station, around point 11?38′34″ N, 105?51′35″ E, 12 m a.s.l.
Clustered in wet grasslands in dry dipterocarp forests (seasonal tropical lowland broad-leaved) on old alluvial soil with the dominance of Dipterocarpus obtusifolius and D. intricatus. Perennial herb, up to 1.2 m tall. HAL 9250 24 Sep 2006 Photos Id by Phan Ke Loc Collectors: Phan Ke Loc, Nguyen Tien Vinh, Dang Van Son & Nguyen Quoc Dat
Collected with the financial support from NYBG, U.S.A.