arboreous

Having the characteristics of a tree. (of a plant)

1684, Thomas Browne, “Observations upon Several Plants Mention’d in Scripture” in Certain Miscellany Tracts, London: Charles Mearne, pp. 28-29, For the Parable may not […] imply any or every grain of Mustard, but point at such a grain as from its fertile spirit, and other concurrent advantages, hath the success to become arboreous, shoot into such a magnitude, and acquire the like tallness.

[…] the continental climate, that is, having a colder winter and warmer summer, capable of producing considerable vigour of arboreous vegetation, and not so favourable to the generating of […] peat-moss […]

Covered or filled with trees.

But among Authours, we meet with nothing more frequent, and indeed more celebrated, than those Arboreous amenities and Plantations of Woods, which they call’d Luci;

The country was no longer plain-land, but an arboreous wilderness interspersed with small fields and fruit orchards.

Growing on trees.

And those fruites whiche Galene calleth arboreous, are those growing vppon trees.

Mushromes are either terrestrial, which grow out of the earth, or arboreous, which adhere to the stocks of trees;

Having a tree-like, branching structure.

The arboreous ramification of the Meditallium of the Cerebellum appearing, being cut right downwards.

1698, William Cowper, The Anatomy of Humane Bodies, Oxford: S. Smith and B. Walford, Table 56, […] [the] Internal Concave Surface [of the Placenta Uterina] next the Amnios, Appears Cover’d with the Chorion; under which the Arboreous Disposition of its Blood-Vessels are elegantly Exprest.