At times they lost the trail, as it was overgrown with fern and berry bush.
She crushed the fern into a rough ball and threw it over the edge of the rock.
Don't you remember, I thought I heard a rustling in the fern, and you laughed at me?
The stuffing is of fern, feathers, mounga, and sundry other matters.
Everything had to be interviewed, from teaspoons to pots of fern.