In the picture you will see limes and and in the other bowl what looks like lemons. Well, they came from the same tree. My dad and I are in disagreement. My tree has always produced green limes but this year has been different. Even before they have turned yellow, the inside was never green. And they were growing bigger than the normal lime's shape and size. Can you tell me why this happened this way? My orange tree did the same thing - oranges on one side and what looks like grapefruit on the other side of the tree.
It is entirely possible that your tree was grafted with both a lemon and lime unto a root stock.
They are called cocktail trees and are possible because lemons and limes are in the same genus, Citrus.
This is not naturally occurring, it is created artificially by the growers.