Fig. 2

The DLCparETO algorithm, decomposing the gene tree. a The input species tree S, gene tree G, and leaf mapping Le. The optimal species map \(\mathcal {M}^{*}\) is the LCA map. b The gene tree decomposed by species. Implied nodes (∗) are added to gene tree branches that span multiple branches of the species tree. [Figure and caption adapted with permission from Du et al. [11] and Wu et al. [10]]