FLORA OF VIETNAM
Acanthaceae
Pseuderanthum polyanthum (C.B.Clarke ex Oliv.) Merr.

Dien Bien Prov., Tua Chua Distr., Tua Thang Municipality, De Chu village, around point 21°53′22”N 103°24′56”E.

Primary evergreen broadleaved forest on very steep slopes and on tops of remnant mountains composed with solid limestone at elevation 900-1150 m a.s.l.

Terrestrial herb to 1.5 m tall on shady steep rocky slope. Flowers light blue. Common.

CPC 2250 12 April 2011
Coll.: L.Averyanov, P.K.Loc, N.Q.Hieu, N.T.Vinh.