Azomonas species are typically motile, oval to spherical, and secrete large quantities of capsular slime. They are distinguished from Azotobacter by their inability to form cysts, but like Azotobacter, they can biologically fix nitrogen under aerobic conditions (diazotrophs).

Azomonas species are typically motile, oval to spherical, and secrete large quantities of capsular slime. They are distinguished from Azotobacter by their inability to form cysts, but like Azotobacter, they can biologically fix nitrogen under aerobic conditions (diazotrophs).