ARBOREOUS
arboreal, arboreous, tree-living
(adjective) inhabiting or frequenting trees; “arboreal apes”
arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, treelike, tree-shaped
(adjective) resembling a tree in form and branching structure; “arborescent coral found off the coast of Bermuda”; “dendriform sponges”
arboraceous, arboreous, woodsy, woody
(adjective) abounding in trees; “an arboreous landscape”; “violets in woodsy shady spots”; “a woody area near the highway”
Source: WordNet® 3.1
Etymology
Adjective
arboreous
Woody (as opposed to herbaceous).
Wooded; covered with trees.
Source: Wiktionary
Ar*bo"re*ous, a. Etym: [L. arboreous, fr. arbor tree.]
1. Having the form, constitution, or habits, of a proper tree, in
distinction from a shrub. Loudon.
2. Pertaining to, or growing on, trees; as, arboreous moss. Quincy.
Source: Webster’s Unabridged Dictionary 1913 Edition