One of the world's best examples of sympatric speciation, when two species from a single ancestor form in the absence of a geographical barrier, has been found among the swaying palm trees on ...

Aside from well-known mechanisms of chromosomal polyploidy, examples of homoploid sympatric speciation in plants are rare. Savo-lainen et al. 1 present interesting comparative morphological, ...

Specifically, their work regards the issue of estimating past rates of speciation and extinction, which are, respectively, the rates at which new species arise and existing species go extinct. These ...