FLORA OF VIETNAM
Rubiaceae
Ophiorrhiza sp.

N. Vietnam, Hoa Binh prov., Da Bac distr., near Doan Ket village
(20°54′58′'N, 105°03′51′'E). Primary broad-leaved evergreen wet forest
on steep slopes of remnant highly eroded limestone ridge at elev.
750-900 m a.s.l., White Rock mt. (Nui Da Trang). Lithophyte herb on
crevices of vertical shady cliffs. Flowers white. Locally common.

HAL 272 28 March 2001

Collectors: N.T.Hiep, L.Averyanov, N.T.Vinh, D.T.Doan.