In distylous plant species, skewed morph ratios are not uncommon and may arise from a range of factors such as demographic stochasticity and leakage of the heteromorphic incompatibility system. Meeus et al. study...
Mertensia fusiformis (Boraginaceae) is a spring-flowering perennial showing pronounced intraspecific variation in style length and stigma–anther separation. Forrest et al. show that population-level variation in...