Labiatae vel Acanthaceae Thai Nguyen Prov., Dong Hy Distr., Tan Long Mun., Mo Ba vill., around point 21?45′24″ N, 105?52′34″ E, 439 m a.s.l.
Clustered on edges of logged closed evergreen broad-leaved lowland forests, on limestone mountains. Perennial ? herb; flowers violet. HAL 9110 23 Aug 2006 Photos Collectors: Phan Ke Loc, Nguyen Tien Vinh and Nguyen Sinh Khang
Collected with the financial support from NYBG, U.S.A.