FLORA OF VIETNAM
Rubiaceae
Ophiorrhiza sanguinea Blume?

Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, environs of Mo O O O village, around point 17°39′36.7”N 105°54′55.7”E.

Remnants of short tall broad-leaved primary forest on rocky top of remnant mountain composed with highly eroded solid crystalline limestone at elevation about 612 m a.s.l.

Lithophytic herb or prostrate undershrub in crevices of vertical cliffs on rocky mountain top. Flowers white. Common.

CPC 3790 26 July 2011
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Vinh.