Passiflora, known additionally because the passion flowers or passion vines, may be a genus of concerning five hundred species of flowering plants, the namesakes of the family Passifloraceae. they're principally vines, with some being shrubs, and many species being herbaceous. For data concerning the fruit of the passiflora plant, see passionfruit. The monotypic genus Hollrungia looks to be inseparable from Passiflora, however additional study is required.