. 2012 Sep 12;12:178. doi: 10.1186/1471-2148-12-178

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 ± 0.09^a	5.28 ± 0.09^a	5.92 ± 0.16^b
Spur width	1.87 ± 0.03^b	1.66 ± 0.03^a	2.38 ± 0.07^c
Length outer perianth segment	12.97 ± 0.13^a	10.66 ± 0.13^b	8.97 ± 0.23^c
Width outer perianth segment	4.62 ± 0.07^ab	4.77 ± 0.07^b	4.30 ± 0.12^a
Length torso	10.05 ± 0.12^a	9.58 ± 0.12^a	8.62 ± 0.17^b
Width torso	1.75 ± 0.08^a	2.90 ± 0.08^b	4.05 ± 0.15^c
Length arm	8.05 ± 0.18^a	10.10 ± 0.18^b	8.81 ± 0.22^a
Width arm	1.07 ± 0.05^a	1.83 ± 0.05^b	1.99 ± 0.08^b
Length leg	10.94 ± 0.20^a	13.36 ± 0.20^b	11.39 ± 0.20^a
Width leg	2.98 ± 0.13^a	4.49 ± 0.13^b	5.46 ± 0.17^c
Width labellum	8.07 ± 0.24^a	11.14 ± 0.24^b	12.14 ± 0.33^b

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