"Sylvan" is an old word for woodland.
To quote dictionary.com





1.
of, pertaining to, or inhabiting the woods.



2.
consisting of or abounding in woods or trees; wooded; woody: a shady, sylvan glade.



3.
made of trees, branches, boughs, etc. –noun



4.
a person dwelling in a woodland region.



5.
a mythical deity or spirit of the woods.