Polypodium glycyrrhiza (Licorice Fern)
from our hike with the inus the other day. These ferns do grow on the ground, in damper, humus rich areas of the forest floor and nurse logs, but they are most abundant on mossy bigleaf maple trunks.
Unlike most ferns that propogate mainly via spores, these have a rhizome that creeps along under the moss, sprouting out one single frond at intervals, as well as producing spores on the underside of these fronds. The rhizome itself is quite sweet, with a licorice flavour to it.
First Nations peoples used the rhizomes for medicinal purposes to help soothe sore throats. The rhizomes were also chewed just because they taste sweet, and were also added to bitter medicines to make them more palatable.