Syconium is a false fruit derived from a compound inflorescence that bears the same name; this formation is typical of the Ficus carica (fig) and of the ficus sycomorus (sycamore), species of the Moraceae family, and is constituted by the flower axis shaped like a fleshy and deliquescent receptacle, covered by small unisexual flowers whose true fruits are of the achenes.
The same term also identifies the false fruit derived from its development. This is formed by a piriform, enlarged, fleshy, hollow receptacle, which has an opening in the apical part, called ostiolo, which allows access to pollinating insects necessary for pollination.
Inside we find many small unisexual flowers placed on the inner wall of the Sicilian. The siconio differs according to the period of maturation; in fact they can only contain female flowers or feminine and masculine flowers. The male flowers are located near the egg.
After the pollination, inside the siconio the real small fruits grow, which are small achenes.
On the fig tree these infructescences have a variable color from yellow to green to black depending on the period of maturation.