Fig 3. Mean and standard errors for (A) blade length of longest leaf at the seedling stage, (B) number of shoots per plant, (C) number of flower heads per plant, (D) length of longest shoot, (E) biomass at the end of the flowering stage, (F) days to flowering, (G) specific leaf area (SLA) of a rosette leaf, (H) perimeter to area ratio of a rosette leaf, (I) perimeter to area ratio of a stem leaf, (J) length to width ratio of a stem leaf (K) width of undivided middle part at the base devided by the total width at the base of a stem leaf and (L) flower head diameter for 21 native (Eurasia, EU) Leucanthemum ircutianum populations and 20 native and 21 invasive (North America, NA) L. vulgare populations grown under standardized conditions.