gynoecium, gynaecium


Also found in: Dictionary, Thesaurus, Encyclopedia.
Gynoeciumclick for a larger image
Fig. 185 Gynoecium . (a) A simple type, eg a bean (b) A complex type, eg a geranium.

gynoecium, gynaecium

or

pistil

the female part of a flower composed of one or more CARPELS. When there are several carpels they can be completely fused to form a ‘compound’ ovary, stigma and style; each carpel can be quite separate, or there can be stages in between the two extremes. See Fig. 185 . When other flower parts arise below the gynoecium the flower is described as hypogynous and the ovary is said to be superior. Alternatively, when other flower parts arise above the gynoecium and the RECEPTACLE encloses the ovary, the flower is described as epigynous and the ovary is said to be inferior.