>Where can I find a description of the NEXUS file format?
The NEXUS web page is:
http://phylogeny.arizona.edu/nexus/nexus.html
The TreeBASE web page is:
http://herbaria.harvard.edu/treebase/
Also see (previously posted):
Maddison, D.R., D.L. Swofford, W.P. Maddison. 1997. NEXUS: an extensible
file format for systematic information. Systematic Biology 46(4): 590-621.
Cohen, B.L., Sheps, J.A. & M. Wilkinson. 1998. Archiving phylogenetic
alignments as NEXUS files. Systematic Biology, in press.