Purple passion fruit, (Passiflora edulis), species of passion flower (family Passifloraceae) and its edible fruit. The plant is native to Paraguay, southern Brazil, and northern Argentina and is grown in tropical regions throughout the world.The fruit's intensely sharp flavour has notes of mandarin, orange, and pineapple. Although commonly eaten fresh, the flavour and aroma carry well, making purple passion fruit a popular flavouring for desserts, drinks, and fragrances.