Distribution: Occurring west of the Cascades crest in Washington; Alaska to Washiington; also in eastern North America.
Habitat: Swamps, pond and lake margins.
Flowers: June-August
Origin: Introduced from Eurasia
Growth Duration: Perennial
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Glyceria maxima in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Glyceria maxima checklist entry.
OregonFlora: Glyceria maxima information.
E-Flora BC: Glyceria maxima atlas page.
CalPhotos: Glyceria maxima photos.
USDA Plants: Glyceria maxima information.