Table 2

Means and standard errors of phenotypic traits related to flower morphology in pure O. militaris, pure O. purpurea and the hybrid zone
Flower trait Orchis militaris Hybrid zone O. purpurea
Spur length 4.97 ± 0.09a 5.28 ± 0.09a 5.92 ± 0.16b
Spur width 1.87 ± 0.03b 1.66 ± 0.03a 2.38 ± 0.07c
Length outer perianth segment 12.97 ± 0.13a 10.66 ± 0.13b 8.97 ± 0.23c
Width outer perianth segment 4.62 ± 0.07ab 4.77 ± 0.07b 4.30 ± 0.12a
Length torso 10.05 ± 0.12a 9.58 ± 0.12a 8.62 ± 0.17b
Width torso 1.75 ± 0.08a 2.90 ± 0.08b 4.05 ± 0.15c
Length arm 8.05 ± 0.18a 10.10 ± 0.18b 8.81 ± 0.22a
Width arm 1.07 ± 0.05a 1.83 ± 0.05b 1.99 ± 0.08b
Length leg 10.94 ± 0.20a 13.36 ± 0.20b 11.39 ± 0.20a
Width leg 2.98 ± 0.13a 4.49 ± 0.13b 5.46 ± 0.17c
Width labellum 8.07 ± 0.24a 11.14 ± 0.24b 12.14 ± 0.33b

All values are given in mm. Values with different letters in superscripts are significantly different at the α = 0.05 level.

Jacquemyn et al.

Jacquemyn et al. BMC Evolutionary Biology 2012 12:178   doi:10.1186/1471-2148-12-178

Open Data