{Simple examples}
The simplest examples of dendrites are the \g{arc} and
\gs{$n$-ods}{n-od} for $n \in \{3, 4, \dots \}$. All they are
trees. By a \g{tree} we mean a dendrite with finitely many
end points, or equivalently, a dendrite containing no points
of order $\omega$ and having the set of all ramification
points finite.