Going back to my pie talk notes:
Key Lime, Mexican Lime or West Indian (Citrus aurantifolia) is not native to the Americas. It originated in southwest Asia, then crossed back into Europe during the Crusades. Ships carried these limes to help prevent scurvy in sailors. It is also why British sailors were referred to as limies. Popular in Spain, key limes were likely introduced to the Americas by the Conquistadors and possibly by Christopher Columbus. First recorded key lime groves in Florida was 1525.
Key limes have almost always been a kitchen garden crop. Hurricanes in 1906 wiped out the pineapple crop, then key lime was introduced as a commercial crop in Florida. Key limes as cash crops ended by 1923 due to another hurricane. What natural disasters didn’t finish, residential development killed remaining key lime commercial production by the 1950’s. Key limes are now grown in Mexico as a cash crop.
The Tahiti limes (Citrus latifolia), is likely a cross between a key lime and a lemon first recorded long after the West Indian lime in the 1500’s. Fully ripened Key and Tahiti limes are yellow when fully ripened.
Regards,