Distribution: Occurring west of the Cascades crest in Washington; central and eastern U.S., where native.
Habitat: Ponds, lakes, and bogs at low elevation.
Origin: Introduced from eastern United States
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Flies
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PNW Herbaria: Specimen records of Wolffiella gladiata in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Wolffiella gladiata checklist entry
OregonFlora: Wolffiella gladiata information
E-Flora BC: Wolffiella gladiata atlas page
CalPhotos: Wolffiella gladiata photos