Tay Ninh prov., Tan Bien Distr., Tan Binh Municipality, near Ta Not Forest Protection Station, Trang Ta Not locality, around point 11?38′34″ N, 105?51′35″ E, 11 m a.s.l.
Rather common in pure community in deep water of dry dipterocarp forest region. Annual herb, inflorescence up to 0.2 m tall, flowers violet.
HAL 9230 20 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.