Diversification, disparification, and hybridization in the desert shrubs Encelia

There are multiple hypotheses for the spectacular plant diversity found in deserts. We explore how different factors, including the roles of ecological opportunity and selection, pro- mote diversification and disparification in Encelia, a lineage of …

Natural selection maintains species despite frequent hybridization in the desert shrub Encelia

Natural selection is an important driver of genetic and phenotypic differentiation between species. For species in which potential gene flow is high but realized gene flow is low, adaptation via natural selection may be a particularly important force …

Recent paper showing how strong natural selection can maintain species boundaries despite hybridization

New paper shows how multiple ecological axes contribute to gradients of selection