堡re tree-herds, we old Ents.奄
Tolkien, J.R.R. 1954. The Lord of the Rings.

MrEnt is a program for drawing high-quality, printable phylogenetic trees. It is a user-friendly software that recognizes Nexus tree files (like those generated by e.g. PAUP and MrBayes) and displays them in the most commonly used tree formats. Our goal was to produce a software to create with no troubles all tree drawings for scientific publications directly from the analysis outputs, without using any additional graphic editor.

MrEnt version 2.4 maintains the same general structure of previous versions, but we introduced several new functions that greatly expand the software potentiality. The major differences are:

  • use of layers, following the same principle as in e.g. Photoshop or Illustrator;

  • display multiple trees within the same figure;

  • embedding images within the figures;

  • automatic calibration of chronograms with error bars, including the BEAST annotated tree files.

Although most functions are intuitive, for more advance features and options you are strongly encouraged to read the manual!

For comments, criticisms, suggestions and bug reports please send an email to

This is an example of a complex, real figure produced with MrEnt. More examples are available here.

(Figure 3 in Zuccon D, Pasquet E & Ericson PGP. 2008. Phylogenetic relationships among Palearctic-Oriental starlings and mynas (genera Sturnus and Acridotheres: Sturnidae). Zoologica Scripta 37: 469-481).