FLORA OF VIETNAM Acanthaceae Gymnostachyum listeri Prain Det.: Yun-Fei, Deng 2008
N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Hong Municipality, around point 18°34′06′'N, 105°11′40′'E. Heavily logged primary broad-leaved evergreen dry forest on steep mt slopes composed with shale at elev about 250-350 m a.s.l. along Song Con river valley.
Shrub 1-1.5 m tall. Flowers white with light green tint. Occasional.