Athyrium angustum var. laurentianum Butters
Athyrium angustum var. laurentianum Butters is a synonym sensu IPNI of:
Athyrium filix-femina var. angustum (Willdenow) G. Lawson, an accepted variety name sensu FNA Ed. Comm., 1993.
Athyrium angustum var. laurentianum Butters is a synonym sensu IPNI of:
Athyrium filix-femina var. angustum (Willdenow) G. Lawson, an accepted variety name sensu FNA Ed. Comm., 1993.