TreeBASE is a relational database of phylogenetic information hosted by the University at Buffalo. In previous years the database has been hosted by Harvard University Herbaria, Leiden University EEW, and the University of California, Davis. TreeBASE stores phylogenetic trees and the data matrices used to generate them from published research papers. We encourage biologists to submit phylogenetic data that are either published or in press, especially if these data were not fully presented in the publication due to space limitations. TreeBASE accepts all types of phylogenetic data (e.g., trees of species, trees of populations, trees of genes) representing all biotic taxa. For more information, see an introduction to TreeBASE, information on searching, the database schema, and a graphic presentation of the web site's internal structure. Also, check out some ideas on why you might want to use TreeBASE.

The WWW implementation of TreeBASE requires a forms-capable and frames-capable browser. We would be very grateful for any feedback on TreeBASE, including suggestions for improvement. In particular, if you encounter any errors please let us know.