Understanding how pollen moves between species is critical to understanding speciation,
diversification, and evolution of flowering plants. For co-flowering species that share …

Background The hypothesis that pollinators have been important drivers of angiosperm
diversity dates back to Darwin, and remains an important research topic today. Mounting …

Speciation is driven by the evolution of reproductive isolating barriers that reduce, and
ultimately prevent, substantial gene flow between lineages. Despite its central role in …

Plant mating systems play a key role in structuring genetic variation both within and between
species. In hybrid zones, the outcomes and dynamics of hybridization are usually interpreted …

Background and Aims According to the Grant–Stebbins model of pollinator-driven
divergence, plants that disperse beyond the range of their specialized pollinator may adapt …

A major goal of speciation research is to understand the processes involved in the earliest
stages of the evolution of reproductive isolation (RI). One important challenge has been to …

Understanding the relative roles of intrinsic and extrinsic reproductive barriers, and their
interplay within the geographic context of diverging taxa, remains an outstanding challenge …

Floral tubes are often thought to be a consequence of adaptive specialization towards
pollinator morphology. We explore floral tube length evolution within Tritoniopsis revoluta …

Selection on floral traits in hermaphroditic plants is determined by both male and female
reproductive success. However, predictions regarding floral trait and mating system …

Coexisting plant congeners often experience strong competition for resources. Competition
for pollinators can result in direct fitness costs via reduced seed set or indirect costs via …