5 species
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Sparganium angustifoliumfloating bur-reed, narrow-leaved bur-reed
Distribution: Widely distributed in much of Washington; Alaska south to California, east to the Rocky Mountain states.
Habitat: Ponds and shallow lakes at moderate elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: perennial
Sparganium emersumsimplestem bur-reed
Distribution: Alaska south to California, east to Colorado.
Habitat: Shallow ponds and marshes.
Origin: Native
Flowers: June - September
Growth Duration: perennial
Sparganium eurycarpumbroadfruited bur-reed
Distribution: British Columbia to Baja, California, east to Newfoundland and Florida.
Habitat: Wet meadows to shallow marshes, mostly emersed.
Origin: Native
Flowers: May - October
Growth Duration: perennial
Sparganium fluctuansfloating bur-reed, water bur-reed
Origin: Native
Growth Duration: perennial
Sparganium natansarctic bur-reed, small bur-reed
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska south to California, across the northern half of North America to the Atlantic Coast.
Habitat: Shallow water, mostly in mountain lakes, sometimes completely submersed.
Origin: Native
Flowers: July-August
Growth Duration: perennial