FLORA OF VIETNAM
Rubiaceae

N. Vietnam, Hoa Binh prov., Mai Chau distr., Hang Kia municipality,
near Pa Khong village, (20°44′40′'N, 104°52′32′'E). Primary
broad-leaved evergreen dry forest with Pinus kwangtungensis along tops
of highly eroded remnant karst limestone ridge at elev. 1300-1440 m
a.s.l. Terrestrial herb or shrublet about 0.5 m hg on wet steep rocky
slope. Flowers white with light violet tint. Occasional.

HAL 847 9 April 2001

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