Phylogeny of land plants generated from nucleotide sequence data in GenBank release 185.

<p>Tips represent extant genera and branch lengths correspond to substitutions per site. Each branch is labeled according to the age of the oldest exemplar sequence in GenBank for any of its descendant tips, with blue branches representing lineages with older exemplar sequences and red branches showing lineages that have only recently been added. The total number of genera represented in the tree is 13,093. A large version of this figure with legible tip names is presented in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0098986#pone.0098986.s004" target="_blank">File S1</a>.