# How to draw an unrooted phylogenetic tree?

I have a problem! I want to draw an unrooted phylogenetic tree like this one:

(Image taken from commons.wikimedia)

I've tried with the package newicktree, but without success! Anyone can help me please? If it is drawable without newicktree package it's ok too! Thanks!

    \begin{figure}[h!]
\centering
\begin{newicktree}
\setunitlength{4cm} \nobranchlengths \nodelabelformat{}
\contemporarytips[30] \drawtree{ (((A,B)X,C)Y,D)Z;}
\end{newicktree}
\caption{Example of phylogenetic tree.}
\label{fig:phyltree}
\end{figure}

• Draw it?? I can't even say it! Welcome to the site! Perhaps showing us an actual minimum (non)working example of what you've tried would get us started. – Steven B. Segletes Jun 25 '15 at 16:01
• I didn't find better words to say it :D I hope that the problem is equally clear :) – Antonio Panzetta Jun 25 '15 at 16:05
• The problem is clear enough, but by not providing any code to get us started, you are asking the community of volunteers to sit down, learn the syntax of a potentially unknown package, and type it all in from scratch. You are more likely to get assistance if you provide some code to set us in the right direction. – Steven B. Segletes Jun 25 '15 at 16:08
• Welcome to TeX.SX! It is easier to help you if you add a minimal working example that takes the form \documentclass{...}\usepackage{....}\begin{document}...\end{document}. If possible, it should compile and have the minimum amount of code needed to illustrate your problem. This makes it much easier for people to help you - and much more likely that they will! – Andrew Jun 25 '15 at 16:10
• Please give us a hint: where is newicktree? It does not seem to be on CTAN. – cfr Jun 25 '15 at 16:28

Maybe this helps a little:

\documentclass[12pt]{article}
\usepackage{newicktree}
\begin{document}
\begin{figure}[h!]
\centering
\begin{newicktree}
\setunitlength{4cm} \nobranchlengths \nodelabelformat{}
\contemporarytips[30] \drawtree{ (((A,B)X,C)Y,D)Z;}
\end{newicktree}
\caption{Example of phylogenetic tree.}
\label{fig:phyltree}
\end{figure}
\begin{newicktree}
\straightbranches\nobranchlengths\nonodemarkers
\lefttree\setunitlength{2mm}
\drawtree{(((thing 1:5, thing 10:5):3, thing 9:6):4, thing 2:7):8, ((thing 7:3, thing 8:3):10, thing 3:10):5,
(thing 6:20, (thing 4:1, thing 5:2):10):1;}
\end{newicktree}

\end{document}


• Now the problem is to connect the tree with the right part. However, this is very helpful (it is a type of unrooted phylogenetic tree) :) – Antonio Panzetta Jun 25 '15 at 17:10