Fluctuating asymmetry is a measurement of non-directional deviation from bilateral symmetry. Variation in floral and vegetative symmetry between genets of creeping charlie (Glechoma hederacea) would indicate developmental differences in the shape of flowers and leaves. Floral samples were collected from a 1/2 square mile area during two summer seasons. Leaf samples were collected from the same area during one summer season. No difference in asymmetry exists among genets for floral traits, but asymmetry of vegetative traits differs significantly among genets. The degree of fluctuating asymmetry in vegetative traits displays strong positive spatial autocorrelation. This suggests that the potential for phenotypic plasticity differs greatly between floral and vegetative traits. Quantitative genetic studies are underway in order to determine the relative importance of environmental and genetic contributions to the genotypic differences.

Key words: fluctuating asymmetry, geographic variation, Glechoma hederacea, phenotypic plasticity, quantitative genetics