Figure 4
From: Enumerating all maximal frequent subtrees in collections of phylogenetic trees
Pruning in phylogenetic trees. (a) Suppressing a node. (b) Pruning with node suppression. textbf(c) Pruning a leaf attached to a degree-two root. (d) Pruning without node suppression. (e) Grafting on a non-root node. (f) Grafting on root. (g) Grafting on an edge.