Environmental Heterogeneity and Phenotypic Divergence: Can Heritable Epigenetic Variation Aid Speciation?
Figure 2
Low-elevation Heliosperma veselskyi and high-elevation H. pusillum are differentiated morphologically and ecologically. Particularly conspicuous is the dense indumentum of sticky glandular hairs on H. veselskyi in comparison to the glabrous leaves and stems of H. pusillum (Photographs: M. Sonnleitner).
