The avocado (Persea americana Mill.) tends to fall into one of the following three groups as represented in the table below. To determine the leaf scent, pick a leaf and rub in between your hands. If you get a strong anise-scent (licorice) it falls into the "Mexican" group. Most of the varieties grown in California fall into the "Guatemalan" or "Mexican" group (or a hybrid of the two) while Florida grows mostly "West Indian" types.