Matteuccia struthiopteris var. pensylvanica (Willdenow) C.V. Morton

Matteuccia struthiopteris var. pensylvanica (Willdenow) C.V. Morton is a synonym sensu FNA Ed. Comm., 1993 of:

Matteuccia pensylvanica (Willdenow) Raymond, an accepted species name sensu Hassler, 2014-2024+.