Citrus × aurantifolia

The Key lime is a citrus hybrid with a globose fruit, 2.5–5 cm in diameter , that is yellow when ripe but usually picked green commercially.

It is smaller and seedier, with a higher acidity, a stronger aroma, and a thinner rind, than that of the Persian lime . It is valued for its unique flavor compared to other limes. The name comes from its association with the Florida Keys, where it is best known as the flavoring ingredient in Key lime pie. It is also known as West Indian lime,.. more