FLORA OF VIETNAM
Rubiaceae
Uncaria sp.

Vietnam, Quang Binh Prov., Quang Ninh Distr., Truong Son municipality, around point 17°20′07″N 106°26′02″E.

Primary and secondary broad-leaved forest on steep shale hill slopes along Khe Den stream at elevation 70-90 m a.s.l.

Woody vine to 25 m long in rather open slope. Flowers light pale dull yellowish. Very common.

HAL 11569 15 April 2008 photo
Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, N.S.Khang