Lime fruit belong to the family of citrus fruits and usually have green, smooth zesty skin with hints of yellow. All types of limes are a hybrid fruits that come in various shapes and sizes. The most popular varieties of limes are Key limes, Mexican limes, Bearss limes, and Tahiti limes. Other varieties of limes include finger limes, kaffir limes with a bumpy skin, and Philippine limes with their orange flesh.