# aligning several trees to the baseline

I want to have the following trees aligned to the baseline. There is a problem which is probably due to the "g" in some of the trees. How do I get these trees aligned? I tried \strut, but this somehow did not work.

\documentclass{article}

\usepackage{tikz-qtree}
\tikzset{every roof node/.append style={inner sep=0.1pt,text height=2ex,text depth=0.3ex}}

\begin{document}

\begin{figure}[htbp]
\begin{tikzpicture}
\tikzset{level 1+/.style={level distance=2\baselineskip}}
\Tree[.NP
[.Det die ]
[.N Frauen ] ]
\end{tikzpicture}
\begin{tikzpicture}
\tikzset{level 1+/.style={level distance=2\baselineskip}}
\tikzset{frontier/.style={distance from root=6\baselineskip}}
\Tree[.NP
[.Det die ]
[.N
[.N Frauen ] ] ]
\end{tikzpicture}
\begin{tikzpicture}
\tikzset{level 1+/.style={level distance=2\baselineskip}}
\tikzset{frontier/.style={distance from root=6\baselineskip}}
\Tree[.NP
[.Det die ]
[.N
[.Adj klugen ] ] ]
\end{tikzpicture}
\begin{tikzpicture}
\tikzset{level 1+/.style={level distance=2\baselineskip}}
\tikzset{frontier/.style={distance from root=6\baselineskip}}
\Tree[.NP
[.N
[.N Frauen ] ] ]
\end{tikzpicture}

\caption{\label{abb-np2}Verschiedene Nominalstrukturen ohne leere Elemente}
\end{figure}

\end{document}

-
Quick hack: put \raisebox{0pt}[\height][0pt]{...} around klugen and kluge. See tex.stackexchange.com/questions/21608/…. – Jeroen Zuiddam Mar 1 '14 at 12:50
@jason-zentz please don't tag questions just because of the subject matter of the text, otherwise we will need hundreds of new tags. The question is about tree alignment in TeX, the meaning of the tree is not relevant. – David Carlisle Dec 9 '14 at 16:00
Did your comment concern the linguistics tag? I did not invent the tag. Somebody else added it to one of my earlier posts or I saw it somewhere and then started to use it myself. Sorry if this was inappropriate. – Stefan Müller Dec 10 '14 at 16:49

\tikzset{every leaf node/.append style={text depth=0pt}}