Origin: Introduced from Eurasia
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Hydrilla verticillata in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Hydrilla verticillata checklist entry.
E-Flora BC: Hydrilla verticillata atlas page.
CalPhotos: Hydrilla verticillata photos.
USDA Plants: Hydrilla verticillata information.