The greater diversity of plant clades in the Neotropics compared to their relatives in Africa is a pervasive pattern in biogeography. To better understand the causes of this imbalance, Alcantara and colleagues studied...
Distribution of polyploidy along a relatively steep Andean elevation gradient is studied using the genus Fosterella (Bromeliaceae) as a model system. Paule et al. observed an ecological differentiation of cytotypes with...