FLORA OF VIETNAM
Rubiaceae s.l. (Carlemoniaceae)
Silvianthus tonkinensis

Vietnam, Nghe An Prov., Tuong Duong Distr., Tam Quang Municipality, Tung Huong village, along Khe Mat stream around point 19°03′26″N 104°37′22″E at elevation about 200 m a.s.l.

Lowland closed secondary evergreen forest on steep slopes along rocky stream valley composed with stratified solid shale and sandstone.

Undershrub 1.5-2 m tall along steep rocky shady stream slopes. Flowers white. Occasional.

HLF 6575 15 March 2007.

Coll. Averyanov L., P.K.Loc, N.V.Trai, N.T.Vinh, N.D.Phuong, Averyanova A.
Grant from Henry Luce Foundation.