FLORA OF VIETNAM Urticaceae Pillea sp. Dien Bien Prov., Tua Chua Distr., Trung Thu Municipality, Trung Thu Village, around point 21055’38”N 103°18’05”E. Highly degraded primary evergreen broadleaved forest on very steep slopes and along remnant ridge composed with solid limestone at elevation 1350-1450 m a.s.l. Lithophytic herb in shady rocky places along tops of ridge. Very common. CPC 2149 10 April 2011 Coll.: L.Averyanov, P.K.Loc, N.Q.Hieu, N.T.Vinh.