Publication: Abhandlungen herausgegeben vom naturwissenschaftlichen Vereine zu Bremen. 2: 490. 1871.

Origin: Introduced

Herbarium search: CPNWH

Notes: Specimens assigned to this name in Washington are likely misidentified. This species is native to brackish waters in eastern North America, so unlikely to persist in freshwater in Washington.

Last updated 1/13/2024 by David Giblin.