Schizocarp

A schizocarp /ˈskɪzəkɑːrp/ is a dry fruit that, when mature, splits up into mericarps.

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The indehiscent (remaining closed) schizocarps of the parsnip ( Pastinaca sativa ), like that of the carrot, will split into two parts.
The indehiscent schizocarp of musk mallow ( Malva moschata ) will later split into segments called mericarps.