Accessory fruits

An accessory fruit is a fruit in which accessory tissue makes up most of the fruit. The accessory tissue is often (but not always) receptacle tissue. Some people refer to pomes as accessory fruits. A strawberry is another common example of an accessory fruit.

A strawberry (like the raspberry) comes from a flower with many pistils. In this case, however, the ovaries of the pistils turn into small achenes while the receptacle grows large, fleshy, sweet and red.

Strawberry development
Strawberry. The receptacle enlarges to become most of the fruit. Individual ovaries develop into achenes.