<Ul> <Li> <P> Ancient silver coin from Cyrene, Libya depicting the heart - shaped' seed' (actually fruit) of Silphium . </P> </Li> <Li> <P> Example of a heart - shaped mericarp fruit in a plant (Heracleum sphondylium) belonging, like the unidentified Silphium, to the Parsley family, Apiaceae . </P> </Li> <Li> <P> Ferula assa - foetida a species of Giant Fennel belonging to the same genus as the ancient Silphium and regarded as having similar properties, while being an inferior substitute for the plant . </P> </Li> <Li> <P> Ferula tingitana: a possible identity for Silphium . </P> </Li> </Ul> <Li> <P> Ancient silver coin from Cyrene, Libya depicting the heart - shaped' seed' (actually fruit) of Silphium . </P> </Li> <P> Ancient silver coin from Cyrene, Libya depicting the heart - shaped' seed' (actually fruit) of Silphium . </P> <Li> <P> Example of a heart - shaped mericarp fruit in a plant (Heracleum sphondylium) belonging, like the unidentified Silphium, to the Parsley family, Apiaceae . </P> </Li>

Where did the fake heart shape come from