Apocynaceae

Alstonia guanxiensis D.Fong et X.X.Chen

Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, environs of Mo O O O village, around point 17°39’21.1”N 105°54’41.7”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 570 m a.s.l. Treelet 3-4 m tall on rocky mountain top and on exposed cliffs. Flowers white. Common. Co-dominant of mountain top forest.

CPC 3860 28 July 2011

Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Vinh.