Table 2 Means and standard errors of phenotypic traits related to flower morphology in pure O. militaris, pure O. purpurea and the hybrid zone

4.97 ± 0.09^a

5.28 ± 0.09^a

5.92 ± 0.16^b

1.87 ± 0.03^b

1.66 ± 0.03^a

2.38 ± 0.07^c

12.97 ± 0.13^a

10.66 ± 0.13^b

8.97 ± 0.23^c

4.62 ± 0.07^ab

4.77 ± 0.07^b

4.30 ± 0.12^a

10.05 ± 0.12^a

9.58 ± 0.12^a

8.62 ± 0.17^b

1.75 ± 0.08^a

2.90 ± 0.08^b

4.05 ± 0.15^c

8.05 ± 0.18^a

10.10 ± 0.18^b

8.81 ± 0.22^a

1.07 ± 0.05^a

1.83 ± 0.05^b

1.99 ± 0.08^b

10.94 ± 0.20^a

13.36 ± 0.20^b

11.39 ± 0.20^a

2.98 ± 0.13^a

4.49 ± 0.13^b

5.46 ± 0.17^c

8.07 ± 0.24^a

11.14 ± 0.24^b

12.14 ± 0.33^b