A regression analysis of the geometrical parameters of the Fisher carnation flower ( Dianthus fischeri Spreng.) from different habitats of the Nizhni Novgorod region has been carried out. The bilateral index of pseudosymmetry has been shown to be the largest positively correlated contributor to the rotational pseudosymmetry as an integral parameter. Irregularity of the flower ( I
r ) and the index of projective cover ( I
pc ) are negatively and less significantly correlated with the rotational pseudosymmetry.
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