Vietnam, Quang Tri Prov., Da Krong Distr., Huc Nghi Municipality, in vicinities of La To village around point 16є29’16’’N 7є00’32’’E at elevation about 414 m a.s.l. Primary broad-leaved evergreen lowland forest on montane hills composed with shale. Climbing shrub in open place. Flowers yellow. Not common.