U.S. Geological Survey - Microbiology
Cyanobacteria images related to USGS microbiology research.
Aphanizomenon flos-aquae 100x magnification
Research Summary: Cyanotoxins in Klamath Lake (Barry H. Rosen)
Description: Aphanizomenon flos-aquae, as viewed at 100x magnification. Note the cluster of filaments that give it the appearance of grass clippings. Color is normally grass-green. This organism can “fix” atmospheric nitrogen.