⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-266164, with some changes.

Sparganium simplex var. longissimum (Fr.) Graebn. is a synonym of Sparganium emersum Rehmann

This name is a synonym of Sparganium emersum Rehmann.

The record derives from WCSP which reports it as a synonym (record 266164) with original publication details: Syn. Mitteleur. Fl. 1: 285 1897.