I come from haunts of coot and hern, I make a sudden sally And sparkle out among the fern, To bicker down a valley.
In neglected fields the fern grows, which must be cleared out by fire.
Being on Twitter is like having a fern.
In the pursuit of knowledge, follow it wherever it is to be found; like fern, it is the produce of all climates, and like coin, its circulation is not restricted to any particular class.