Fig. 1.

Schematic representation of the protocol to estimate floral integration based on morphometric measures of floral traits. (A) The inner whorls of a flower corresponding to sexual organs (gynoecium and androecium), and the outer cycles corresponding to perianth traits (corolla and calix). (B) An illustration of how whole-flower and intra-floral integration are obtained. Polygons represent the correlation matrix among the whole set of floral traits. Vertices represent each trait, and lines connecting vertices indicate estimated correlations. Whole-flower integration is estimated as the mean correlation value among all floral traits. The same rationale is followed to estimate integration for a sub-set of floral traits (intra-floral integration). In this case, intra-floral integration was estimated among sexual organs traits and among perianth traits.