Distribution: Occurring west of the Cascades crest in Washington; widespread in eastern North America, where native.
Habitat: Lake and pond shorelines, often on floating logs.
Flowers: August-October
Origin: Introduced
Growth Duration: Perennial
Conservation Status: Not of concern
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PNW Herbaria: Specimen records of Agalinis purpurea in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Agalinis purpurea checklist entry
OregonFlora: Agalinis purpurea information
E-Flora BC: Agalinis purpurea atlas page
CalPhotos: Agalinis purpurea photos