Origin: Native
Conservation Status: Not of concern
[none provided]
Occurring west of the Cascades crest in Washington, where known only in King County for a restoration site; California east along Mexican border to central and eastern U.S.
Occurring east of the Cascades crest in Washington chiefly along the Columbia River; British Columbia to California, east to the Great Lakes region and midwestern U.S.PNW Herbaria: Specimen records of Ammannia in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Ammannia checklist entry
OregonFlora: Ammannia information
E-Flora BC: Ammannia atlas page
CalPhotos: Ammannia photos