Defining Characteristics:

  • Colony former? Not common, but capable of forming slimes and mats
  • Coccoid
  • Uni- to multicellular spherical individual colonies
  • Organized cell arrangement within colony
  • Encased in mucilaginous envelope
  • Aerotopes are rare
  • Heterocysts and akinetes absent
  • Could be confused with: Gloeocapsa

Calothrix

Calothrix