FLORA OF VIETNAM
Apocynaceae
Alyxia sp.
Ha Giang Prov., Vi Xuyen Distr., Tung Ba municipality, Khau Ca NR.
Primary broad-leaved humid evergreen forest on very steep slopes and along rocky ridge composed with solid crystalline highly eroded limestone at elevation 700-1150 m a.s.l. around point 22°50′39.4″N 105°07′50.3″E.
Shrub 2-3 m in tall.
08 May 2015 CPC 7764
Coll.: N.Q. Hieu, N.T.Hiep, T.B. Ngan, C.Q. Ngan, D.K. Harder, C. P. Tuy, G.C.Pao