Sparganium erectum subsp. stoloniferum (Graebner) C.D.K. Cook & M.S. Nicholls nom. illeg.

Sparganium erectum subsp. stoloniferum (Graebner) C.D.K. Cook & M.S. Nicholls nom. illeg. is a synonym sensu IPNI of:

Sparganium eurycarpum Engelmann, an accepted species name sensu FNA Ed. Comm., 2000.