FLORA OF VIETNAM
Acanthaceae Quang Binh Prov., Minh Hoa Distr., Dan Hoa Municipality, to the EEN of Bai Dinh village around point 17°45′27”N 105°47′46”E.

Primary broad-leaved closed wet forest on very steep rocky slopes and cliffs of low remnant mountains composed with highly eroded solid marble-like limestone at elevation about 600-700 m a.s.l.

Terrestrial herb to 0.6 m tall on shale alluvial steep slope. Flowers light blue-violet. Not common.

HAL 12502 11 February 2009 Photo.
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, L.T.Son.