Fig. 1. Plasticity in foliar and physiological traits.

aMoricandia arvensis leaves in spring and summer (leaves belonged to the same individual). b Box-plot showing the median, quartiles and interval confidences of the CO₂ compensation points of the plants in spring (lilac box) and summer experimental conditions (the same plants replicated in each condition) and in summer in field conditions (white boxes). For comparison, we have added information from the C₃ species Moricandia moricandioides (purple box, own data) and C₄ species of the genus Cleome (red box), the closest C₄ plants to Moricandia (see “Methods” section for details).