Passiflora maliformis, the sweet calabash, conch apple, wild purple passionfruit, or sweet cup, is a smallish (5cm) passionfruit with purple, yellow or green skin and a greyed-yellow to orange pulp that is aromatically-scented and -flavoured. It is a fast-growing vine, growing best in somewhat cooler-than-tropical climates. The rind is particularly hard and tougher than most passionfruits. It is usually eaten fresh or used to flavour drinks. It is a native to the Caribbean, Central America and Northern South America.