Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the N of Na Nheo village (in the vicinity of point 21ш59'12''N, 104ш15'49''E). Secondary open broad-leaved evergreen lowland forest on granite and quartzite along river at elev. 300 m a.s.l. Climbing shrub 5-6 m hg. Flowers olive-green. Not common.