Synonyms for Treelike (same or very similar meaning)
WordNet sense 1 (resembling a tree in form and branching structure):
arboreal, arborescent, dendroid, arboreous, arboresque, arboriform, dendriform, dendroidal, tree-shapedWordNet sense 2 (having many branches):
branchyFrom the ODE community, based on WordNetadd/edit