mx can store phylogenetic trees. Both Newick formatted strings (a simple text field) and a fully parsed set of nodes are stored in the database. While there is currently minimal functionality for using the parent/child data the system provides a good starting point for those wishing to develop query based methods on trees.
Editing the text representation (Newick format) automatically also updates the parent/child tree as well.
Viewing trees in Phylowidget
Trees can be visualized directly within mx thanks to the very cool Phylowidget library. After you adda tree click show for that tree, then "Phylowidget" from the navigation on the left. IMPORTANT: You must have java 2 (1.5 or or later) to run the widget.