Mesophyll conductance to CO₂ (g_mes) vs. leaf mass per area (LMA) (a), leaf density (D) (b) and leaf thickness (T) (c) per season (winter, black; summer, white). Symbols represent single measurements of: control (C; •, ◦); winter resprouts, (RW; ▲, ∆); summer resprouts, (RS; ∇). Asterisks indicate statistically significant correlations (* p ≤ 0.05).