FLORA OF VIETNAM Urticaceae Pilea sp. 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. Lithophytic herb on shady vertical cliffs. Flowers green to pinkish. Leaves velvety green, sometimes with white spots. Very common. CPC 2247 12 April 2011 Coll.: L.Averyanov, P.K.Loc, N.Q.Hieu, N.T.Vinh.