Dischidia ovata

Dischidia ovata, commonly called watermelon dischidia (pronounced ), is a small vine in the frangipani and hoya family Apocynaceae, native to New Guinea and Cape York Peninsula, Australia. The species name ovata refers to its ovate leaves, its common name refers to the leaf venation that resembles a watermelon rind. The species is succulent and grows as an epiphytic or lithophytic vine in a variety of habitats....read more on Wikipedia.