An unintended consequence of global change is an increase in opportunities for
hybridization among previously isolated lineages. Here we illustrate how global change can …

While homoploid hybridization was viewed as maladaptive by zoologists, the possibility that
it might play a creative role in evolution was explored and debated by botanists during the …

Less than a decade ago, we proposed that hybridization could serve as a stimulus for the
evolution of invasiveness in plants (Ellstrand and Schierenbeck Proc Nat Acad Sci USA 97 …

Homoploid hybrid speciation is the origin of a hybrid species without change in chromosome
number. Although currently thought to be a rare form of speciation, especially relative to the …

The use of molecular techniques is rapidly growing as the tools have become more diverse
and powerful, more widely available, and easier to implement. Molecular analyses are able …

The evolution of self-incompatibility (SI) has been debated since its genetic bases were first
fully described over half a century ago. The diversity of SI systems and their scattered …

Altitudinal gradients are characterized by steep changes of the physical and biotic
environment that present challenges to plant adaptation throughout large parts of the world …

Hybridization is a common phenomenon, yet its evolutionary outcomes remain debated.
Here, we ask whether hybridization can speed adaptive evolution using resynthesized …

Gene flow from diploid to polyploid species could have significant effects on the morphology
and ecology of polyploids. The potential of such introgression for bringing about …

Speciation rates need to be considered when estimating human impacts on the numbers of
species on Earth, given that past mass extinctions have been followed by the accelerated …