FLORA OF VIETNAM
Rubiaceae
Ophiorrhiza sp.
Ha Giang Prov., Bac Me District., Phieng Luong commune, Phieng Luong village direct to phieng Phoc, Khuoi Phin, Sinh Long, Tuyen Quang Province,
Primary evergreen broad- leaf forest on limestone at elevation 1000-1183 m a.s.l.
Grows in soil limestone humus , on slope and top of mountaine at elevation 1183 m a.s.l. around point 220 37′ 48.3″N;1050 19′ 32.4″E, 1183 m a.s.l.
Terrestrial shrub 1 m in height, flower tube white, lobe red, common.
07 April 2014, CPC 7304 .
Coll.: N. Q. Hieu, N.T.Hiep, N.N. Hung, T.Q. Ngan, T.P.Tuan, G.M. Pao