FLORA OF VIETNAM. Urticaceae. Gen.sp. Hoa Binh Prov., Lac Son Distr., Tu Do Municipality, Mon village, around point 20°25'29"N 105°19'36"E. Primary broadleaved forest on steep rocky slopes of remnant mountain composed with solid crystalline highly eroded limestone at elevation about 500-700 m a.s.l. Shrub about 2 m tall in rather open place. Flowers dull dirty reddish. Common. CPC 1535 25 March 2011. Coll.: N.Q.Hieu, L.Averyanov, N.T.Hiep, P.K.Loc, P.V.The, N.T.Vinh, T.B.Ngan, N.Tap, D.D.Dao, V.T.Ha.