Editing Plant reproductive morphology (section)

===Basic flower morphology===
[[File:Ranunculus glaberrimus labelled.jpg|thumb|upright=1.5|''[[Ranunculus glaberrimus]]'' flower]]

In angiosperms the flower is the characteristic sexual reproductive structure, which varies enormously across the group. The bisexual flower (termed [[Glossary of botanical terms#perfect|"perfect"]] botanically), of ''[[Ranunculus glaberrimus]]'' in the figure provides an example of the common structures. A [[calyx (botany)|calyx]] of outer [[sepal]]s and a [[corolla (flower)|corolla]] of inner [[petal]]s form the [[perianth]], the non-sexual part of the flower. Next inwards grow numerous [[stamen]]s that produce [[pollen]] grains, each grain producing a tiny male gametophyte from a microspore. Stamens collectively form the androecium. Finally in the middle there are [[carpel]]s, which at maturity contain one or more [[ovule]]s, and within each ovule is a tiny female gametophyte produced from a megaspore.{{sfn|Sporne|1974|pp=14–15}} Carpels also have a [[Stigma_(botany)|stigma]] which receives pollen and a [[Style_(botany)|style]] which connects the stigma to the ovary and enables the pollen to grow into the ovary for the female gametophyte to achieve fertilization. Carpels collectively form the gynoecium.

In other flowering plants, two or more carpels and their styles and stigmas may be fused together to varying degrees in the same flower. This entire structure may be called a [[pistil]].