FLORA OF VIETNAM Acanthaceae Rhinacanthus palatiferum ?
N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Thanh Son Municipality, Bang village, E macroslope of Pu Luong range around point 20°27′34′'N, 105°07′17′'E at elev. 700 m a.s.l. Secondary evergreen shrubs on shale soil at edge of forest. Undershrub 1.5 m tall. Flowers pale violet. Rare.