FLORA OF VIETNAM
Acanthaceae

Vietnam, Lang Son Prov., Bac Son Distr., Tan Tri Municipality, around Na Mau village, Khau Kieng ridge composed with shale.

Deeply degraded remnants of primary and secondary broadleaved evergreen wet forest with bamboo at elevation 800-1100 m a.s.l.

Terrestrial herb up to 1.5 m tall on shady wet rocky stream slope. Flower white. Not common.

HAL 6771 15 March 2005.

Collectors: L.Averyanov, N.T.Hiep, P.V.The, A.Averyanova.