Dryopteris spinulosa var. americana (Fischer ex Kunze) Fernald p.p.

Dryopteris spinulosa var. americana (Fischer ex Kunze) Fernald p.p. is a synonym sensu TROPICOS of:

Dryopteris campyloptera (Kunze) Clarkson, an accepted species name sensu FNA Ed. Comm., 1993.

Dryopteris expansa (C. Presl) Fraser-Jenkins & Jermy, an accepted species name sensu FNA Ed. Comm., 1993.