Robuta

https://idfg.idaho.gov/species/taxa/47794 Sparganium eurycarpum (Large Bur-reed) | Idaho Fish and Game Species Catalog idaho fish and game sparganium large bur reed https://species.wikimedia.org/wiki/Sparganium_eurycarpum Sparganium eurycarpum - Wikispecies sparganium wikispecies