Sparganium williamsii Rydberg
Sparganium williamsii Rydberg is a synonym sensu WCSP of:
Sparganium hyperboreum Laestadius ex Beurling, an accepted species name sensu FNA Ed. Comm., 2000.
Sparganium williamsii Rydberg is a synonym sensu WCSP of:
Sparganium hyperboreum Laestadius ex Beurling, an accepted species name sensu FNA Ed. Comm., 2000.