This is a gift of South Africa, which has been planted and naturalized through the warmer parts of the world. It is popular partly for its scented flowers, and partly for its edible fruit, which has a cranberry taste and is known in Africa as Num-num.
Family:AsclepiadaceaeDistribution: Common in scrub jungles on Euphorbia antiquorum or E.barnaharti. Limited to Peninsular India and Mayanmar.Local name(Telugu): Pullakadalu, Stems are bitter due to extreme sour to taste, It is used for cooling effect. Photographed at N.Konda hill forest of Eastren ghats.Straggling leaf less succulent shrubs.Stems terete, jointed with milky latex, Flowers white, 1cm across in terminal or axillary subsessile umbellate cymes. Calyx 5 partite, Corolla rotate, deeply lobed, corona double, outer membranous, inner fleshy adnate to the stamens, anthers reduced to pollen masses, ovary of 2 carpels.Follicles 8-10cm long, lanceolate, glabrous.Reference: Flora of presidency of Madras by J.S Gamble, ENVIS, Flora of Nellore district By B.Suryanarayana &A.S Rao