Coins from Cyrene, in what is now Libya, carry the familiar emblem, representing silphium, a now-extinct plant used as a cooking spice, perfume, aphrodisiac, and… contraceptive.
When the colonists returned with shipments of the strange new bean, missionaries' salacious accounts of native customs gave it a reputation as an aphrodisiac.
Potatoes were actually introduced to Europe as an aphrodisiac, but it turns out that you have to distill those potatoes into vodka before they have the desired effect.