Fig. 3.

Species-specific variation of niche occupation and niche partitioning between sexual and apomictic Boechera in a subset of species where statistical comparisons could be made. In some species, apomixis is constrained to a subset of climates (e.g., B. retrofracta) whereas, in others, apomixis is found across the entire ecological niche (e.g., B. divaricarpa). Asterisks denote significant differences between distribution of sexual and apomictic Boechera based on two-tailed Fisher’s exact tests (α = 0.05; *P < 0.05; **P < 0.01, ***P < 0.001).