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Genus: Aphanizomenon | Cyanobacteria
Species: Aphanizomenon flos-aquae Samples collected in Pinto Lake, California Order: Nostocales Family: Nostocaceae Description: The thallus of Aphanizomenon is filamentous. Filaments can be free-floating and solitary or form colonies. Colonies have a characteristic parallel arrangement and may look like clumps of grass clippings floating on the surface. Cells are cylindrical or barrel-shaped and pale blue-green. All species are planktonic and can form dense blooms, and can produce saxitoxins. Aphanizomenon flos-aquae is often found in eutrophic lakes, reservoirs, regulated fish ponds, and cattle ponds.
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