Polyploidy has been hypothesized to be both an evolutionary dead-end and a source for
evolutionary innovation and species diversification. Although polyploid organisms …

Polyploidy, or the duplication of entire genomes, has been observed in prokaryotic and
eukaryotic organisms, and in somatic and germ cells. The consequences of polyploidization …

Hybridization has long been recognized as a fundamental evolutionary process in plants
but, until recently, our understanding of its phylogenetic distribution and biological …

Investigators have long searched for a polyploidy paradigm—rules or principles that might
be common following polyploidization (whole‐genome duplication, WGD). Here we attempt …

Climate change is rapidly altering natural habitats and generating complex patterns of
environmental stress. Ferns are major components of many forest understories and, given …

ON THE NATURE OF THINGS: ESSAYS AMERICAN JOURNAL OF BOTANY funded by
NSF. As of this writing, iDigBio currently serves over 105 million specimen records from US …

Polyploidy (whole‐genome duplication, WGD) is an integral feature of eukaryotic evolution
with two main forms typically recognized, autopolyploidy and allopolyploidy. In plants, a …

Species environmental niches are central to ecology, evolution, and global change
research, but their characterization and interpretation depend on the spatial scale …

Polyploid speciation entails substantial and rapid postzygotic reproductive isolation of
nascent species that are initially sympatric with one or both parents. Despite strong …

Multispecies interbreeding networks, or syngameons, have been increasingly reported in
natural systems. However, the formation, structure, and maintenance of syngameons have …