Variation
var. esculentum
Black Beauty Eggplant
This bushy perennial produces large oval purplish-black fruit that is up to 170mm (6¾ in) long and is blunt an broad at the blossom end and matures in 72-85 days.

var. ovigerum 
Easter Egg Plant
This perennial is found from Africa to Asia and has erect pubescent stems with lobed ovate leaves up to 230mm (9in) long and produces solitary purplish-blue flowers that are up to 38 mm (1½ in) wide during summer. The fruit (berry) is white, yellowish or striped and ranges from 150 mm (6 in) to 300mm (12 in) long by 76 mm (3 in) to 127 mm (5 in) wide.

Solanum xanthocarpum
Thai Eggplant
This different species is a small rounded eggplant is about the size of a golf ball and is white or green. It is commonly used in South-east Asian cuisine and there are four common cultivar types; Thai Purple, Thai Green, Thai Yellow and Thai White.