def METHOD_NAME(node):
    if node.is_leaf:
        spF = TextFace(node.species, fsize=10, fgcolor='#444444', fstyle='italic', ftype='Helvetica')
        add_face_to_node(spF, node, column=0, position='branch-right')
        if hasattr(node, 'genename'):
            geneF = TextFace(" (%s)" %node.genename, fsize=8, fgcolor='#777777', ftype='Helvetica')
            add_face_to_node(geneF, node, column=1, position='branch-right')