Cynanchum ellipticum

About

Cynanchum ellipticum is a South African climbing plant of the family Apocynaceae. It has slender stems and branches, exuding milky, bitter latex that is non-irritant. It occurs in coastal scrub from Cape Town as far north as Mozambique and further inland up to 1300 m, and may be found on flats or moderate slopes, in sand or between rocks, in indigenous forests and along forest margins and thickets, frequently occurring in disturbed habitats.

Summary from Wikipedia