Citrullus Schrader

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 298

4. Citrullus Schrader 1

Monoecious. Stems procumbent or climbing; tendrils simple or branched. Flowers solitary, yellow; calyx and corolla deeply 5-fid. Stamens 3; filaments and anthers free; connective not prolonged beyond the loculi. Female flowers with 3 small staminodes. Disc absent. Ovary with 3 placentae and numerous ovules. Annual; ovary densely lanate 1. lanatus Perennial ; ovary sparsely hispid 2. colocynthis