Persian limes are just a cross between key limes and lemons. Before Persian limes were popularized in the 20th century, key limes were just called "limes" in the US (and still are in cocktail recipes and latin markets).
Persian limes are just a cross between key limes and lemons. Before Persian limes were popularized in the 20th century, key limes were just called "limes" in the US (and still are in cocktail recipes and latin markets).