Hares-foot fern

from The Collaborative International Dictionary of English v.0.48

Hare's-foot fern \Hare's"-foot` fern`\ (-f[oo^]t` f[~e]rn`).
   (Bot.)
   A species of fern ({Davallia Canariensis}) with a soft, gray,
   hairy rootstock; -- whence the name.
   [1913 Webster]