Floating Bur-reed, Narrow-leaf Bur-reed, Narrow-leaved Bur-reed: Sparganium angustifolium (Synonyms: Sparganium angustifolium var. multipedunculatum, Sparganium emersum var. angustifolium, Sparganium emersum var. multipedunculatum, Sparganium multipedunculatum, Sparganium simplex var. multipedunculatum)
Simplestem Bur-reed, Simple-stem Bur-reed: Sparganium emersum (Synonyms: Sparganium angustifolium ssp. emersum, Sparganium chlorocarpum, Sparganium chlorocarpum var. acaule, Sparganium emersum ssp. acaule, Sparganium emersum ssp. emersum, Sparganium emersum var. emersum, Sparganium simplex, Sparganium simplex var. simplex)
Broadfruit Bur-reed, Broad-fruited Bur-reed: Sparganium eurycarpum (Synonyms: Sparganium californicum, Sarganium erectum, Sparganium erectum ssp. stoloniferum, Sparganium eu;rycarpum ssp. eurycarpum, Sparganium eurycarpum var. greenei, Sparganium greenei)
Arctic Bur-reed, Small Bur-reed: Sparganium natans (Synonym: Sparganium minimum)