I, the subjects are different:

1, egg fruit (scientific name: Passiflora edulia Sims), also known as passion fruit, is a herbaceous vine in the genus Passiflora in the Passifloraceae family

2, passion flower (scientific name: Passiflora caerulea?L.), is a perennial evergreen scandent woody vine.

Second, the appearance of different:

1, passion fruit: berry ovoid, 3 ~ 4 cm in diameter, glabrous, purple when ripe; most seeds, ovate. Flowering in June, fruiting in November.

2, passion fruit: berry ovoid to subglobose, about 6 cm long, orange or yellow when ripe; seeds numerous, obcordate, about 5 mm long. Flowering period May-July.

Three, different places of origin:

1, passion fruit: born in the jungles of the valleys at an altitude of 180 to 1900 meters. Native to the Antilles, widely planted in tropical and subtropical areas. There are mainly purple fruit and yellow fruit two categories. Plant life expectancy is about 20 years, and economic life expectancy is generally 8 to 10 years.

2, passion flower: native to Brazil, later in South America, South Africa, Southeast Asian countries, Australia and the South Pacific regions are planted.

Four, different classifications:

1, passion fruit mainly purple fruit and yellow fruit two categories.

2, passion fruit mainly yellow fruit species, purple fruit species, green fruit species and yellow fruit and purple fruit hybrids four varieties. Passiflora mainly planted yellow fruit species and purple fruit species.

Baidu Encyclopedia - Egg Fruit

Baidu Encyclopedia - Passion Fruit