Aggregate fruits come from a single flower, and from a flower with an apocarpous gynoecium with numerous carpels. Each carpel develops into a fruit, and the fruits are then clustered together into an aggregate fruit.
On the left is the fruit of tulip tree (Liriodendron tulipifera), which is an aggregate of samaras.
On the right is a fruit of the southern magnolia (Magnolia grandiflora), which is an aggregate of follicles.
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