An international research team led by Brown University has amassed the largest evolutionary tree (phylogeny) for plants.

Computational biologists at the University of Pennsylvania say that species are still accumulating on Earth but at a slower rate than in the past.

A new "tree of life" has been constructed by researchers at the Virginia Bioinformatics Institute (VBI) at Virginia Tech for the gamma-proteobacteria, a large group of medically and scientifically important bacteria that includes Escherichia coli, Salmonella typhimurium, and other disease-causing organisms.

Flowering plants may be considerably older than previously thought, says a new analysis of the plant family tree.

With increasing species richness, due to more plant introductions than extinctions, plant communities of many European regions are becoming more homogeneous.