Charles Sturt University
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What is Floral Symmetry?

Floral symmetry refers to if, and how, flowers can be divided in mirror-image parts.

When deciding on the symmetry of a flower, the position and shape of the more conspicuous features are considered, i.e. the petals or perianth and/or the androecium.

Flowers usually have one of two forms of symmetry:

Actinomorphic or radial (or regular)

Actinomorphic or radial (or regular)

Zygomorphic or bilateral (or irregular)

Zygomorphic or bilateral (or irregular)

A small number of species have flowers with no plane of symmetry (asymmetrical).