The Passion Flowers are so named from the supposed resemblance of the finely-cut corona in the centre of the blossoms to the Crown of Thorns and of the other parts of the flower to the instruments of the Passion of Our Lord. Passiflora incarnata has a perennial root, and the herbaceous shoots bear three-lobed, finely serrated leaves and flesh-coloured or yellowish, sweet-scented flowers, tinged with purple. The ripe, orange-coloured, ovoid, many-seeded berry is about the size of a small apple; when dried, it is shrivelled and greenish-yellow. The yellow pulp is sweet and edible.

Contains Passiflorine, would appear to be somewhat similar to morphine.