Distribution: Occurring chiefly west of the Cascades crest along the coastal counties in Washington; British Columbia to Baja California, Mexico, east to the Rocky Mountains and northern Great Plains; also in South America.
Habitat: Generally in shallow water, but often stranded in mud at edge of receding ponds, coastal tideflats to interior valleys.
Flowers: July-September
Origin: Native
Conservation Status: Not of concern
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PNW Herbaria: Specimen records of Triglochin scilloides in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Triglochin scilloides checklist entry.
E-Flora BC: Triglochin scilloides atlas page.
CalPhotos: Triglochin scilloides photos.
USDA Plants: Triglochin scilloides information.