Citrullus
Monoecious, annual or tuberous-rooted perennial trailing herbs, hairy to scabrous. Leaves palmately to bipinnately lobed, simple; tendrils simple or 2–4-branched. Male and female flowers solitary. Calyx and corolla 5-lobed; hypanthium short; stamens inserted toward base of hypanthium, connective broad, anthers 3, two 2-locular, one 1-locular, locules flexuose; disc absent. Female flowers with 3-lobed stigma; staminodes 3; ovary hairy with many ovules. Fruit globose, indehiscent, fleshy; seeds many, ovate, compressed.
3 species, in Africa and Asia; 2 species naturalised in Australia.
Jobson, P.C. (1996). Cucurbitaceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae, pp. 379–385. Inkata Press, Melbourne.