FLORA OF VIETNAM
Rubiaceae
Uncaria macrophylla

Hoa Binh Prov., Lac Son Distr., Ngoc Son Municipality, Khu village, around point 20°26′28”N 105°20′28”E.

Secondary scrub along road between remnant hills composed with solid crystalline highly eroded limestone at elevation about 520 m a.s.l.

Woody vine or scandent shrub to 4 m tall in open place along small stream. Not common.

CPC 1648 27 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.