FLORA OF VIETNAM
Rubiaceae

N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Kim Municipality, Rao
Bun stream around point 18°23′39′'N, 105°15′12′'E. Primary
broad-leaved evergreen closed wet forest on very steep shale slopes of
river canyon at elevation about 300-400 m a.s.l.

Treelet or shrub 3-4 m tall. Flowers white. Not common.

HAL 5101 4 May 2004

Collectors: P.K.Loc, L.Averyanov, P.V.The, N.T.Vinh.