It is formed of a single
or several pistils. Each pistil is
composed of one or more fused carpels
and produces the ovules.
When in a flower the carpel
is single the terms gynoecium and
pistil are synonymous.
If the carpels (pistils) are free the gynoecium is
apocarpous or if the carpels are
fused the gynoecium (pistil) is
syncarpous (or compound).