1.Definition: abounding in trees

"An arboreous landscape"

Related Adjective(s):arboraceous, woodsy, woody

2.Definition: inhabiting or frequenting trees

Related Adjective(s):arboreal

3.Definition: resembling a tree in form and branching structure

Related Adjective(s):arboreal, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, treelike