Proportion of leaf size and shape variation within Acer rubrum that can be explained by growth site (phenotypic plasticity) and seed source (ecotypic variation).

Note.�� Variables are grouped by relatedness to leaf dissection, tooth number, or leaf and tooth size. Results for each leaf size and shape variable are based on a multiple linear regression model (see Materials and Methods for details); r2-statistic reflects the individual (partial) contribution of growth site or seed source; r2 of the full model is the sum of the two partials. For convenience, significant effects from Table 2 (P