FLORA OF VIETNAM Acanthaceae Strobilanthes tonkinensis Lindau Det.: Yun-Fei, Deng 2008
N. Vietnam, Hoa Binh prov., Da Bac distr., about 2-3 km to the E of Doan Ket village (20°54′55′'N, 105°02′18′'E). Primary broad-leaved evergreen mountain wet forest on silicate sandstones at elev. 900-1136 m a.s.l. Terrestrial and lithophyte herb up to 1.5 m hg in shady steep slope. Flowers white with light violet tint. Not common.