Figure 1From: Inferring polyploid phylogenies from multiply-labeled gene treesA collection of MUL-trees. A collection of three MUL-trees, whose leaves are labeled with the elements of the multiset ℳ = {a1, a1, a2, a2, a2, a3, a3}. The root of each tree is marked by r and in tree T1, e labels a branch (see text for details).Back to article page