brazilian waterweed
1 species
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Egeria densaBrazilian waterweed, South American waterweed
Distribution: Occurring chiefly west of the Cascades crest in Washington; southwestern British Columbia to California, east across the southern half of the United States to the Atlantic.
Habitat: Ponds, lakes, and slow-moving water at low elevation.
Origin: Introduced from South America
Flowers: July-September
Growth Duration: Perennial