arbŏrārĭus, a, um, adj. [arbor] (a technical form of arboreus),
I of or pertaining to trees , tree- : falx, i. e. for pruning trees , Cato R. R. 10, 3; 31, 4; Varr. R. R. 1, 22, 5: picus, a woodpecker , Plin. 30, 16, 53, § 47: proventus, Sol. 11 and 23.
II —Hence, arbŏrārĭa (sc. herba), ae, f., the blackivy , as growing on trees, App. Herb. 98.