| Cells do not form a large coenobium; cell body covered by sheath | 
|   Chroococcus
 61 samples
 1.5-49 μm
 1998-2008
 |   Chroococcus
 61 samples
 1.5-49 μm
 1998-2008
 |   Cyanosarcina
 Syn. Myxosarcina
 5 samples
 2001-2003
 |   Cyanosarcina
 Syn. Myxosarcina
 5 samples
 2001-2003
 | 
|   Synechocystis
 8 samples
 μm
 Japan, 2004
 |   Cyanothece
 Syn. Synechococcus
 15 samples
 16-69 μm
 2005-2008
 |   Dactylococcopsis
 
 |   Tetrapedia
 
 | 
| Cells form a large coenobium; outline shape irregular | 
| Cell body spherical | 
|   Microcystis
 33 samples
 1998-2008
 |   Microcystis
 33 samples
 1998-2008
 |   Microcystis
 33 samples
 1998-2008
 | 
|   Aphanocapsa
 20 samples
 1.5- μm
 1998-2006
 |   Aphanocapsa
 20 samples
 1.5- μm
 1998-2006
 |   Gloeocapsa ?
 2 samples
 μm
 Iruma
 Saitama, 2002
 | 
|   Eucapsis sp.
 μm
 Kenashitai
 Hakkoda mountain
 Aomori, 2005
 |   Eucapsis sp.
 9.5 x 7 μm
 Kenashitai 3
 Hakkoda mountain
 Aomori, 2006
 
  | 
| Cell body ellipsoidal or elongated | 
|   Aphanothece
 18 samples
 3-10 x μm
 1998-2007
 |   Gloeothece
 G. linearis
 or Rhabdoderma ?
 8-14 x 1.7-2 μm
 Tanohara marsh
 Shiga highland
 Nagano, 2004
 |   Rhabdoderma
 10 samples
 7-12 x 2-2.5 μm
 2005-2008
 | 
| Cells form a coenobium; outline shape constant | 
|   Merismopedia
 41 samples
 M. glauca
 μm
 1998-2008
 |   Merismopedia
 41 samples
 M. convoluta
 μm
 1998-2008
 |   Merismopedia
 41 samples
 M. tenuissima
 μm
 1998-2008
 |   Merismopedia
 41 samples
 M. minima
 μm
 1998-2008
 | 
|   Pannus
 5 samples
 2-3.5 μm
 1999-2004
 |   Gomphosphaeria
 1 sample
 μm
 2006
 |   Woronichinia
 2 samples
 μm
 1999-2000
 |   Snowella
 5 samples
 μm
 2001-2004
 | 
|   Coelosphaerium
 10 samples
 μm
 1999-2006
 | 
| Unidentified | 
|   Unidentified sp.
 μm
 Saitama, 2000
 |   Unidentified sp.
 μm
 Japan, 2000
 |   Unidentified sp.
 μm
 Saitama, 1999
 |   Unidentified sp.
 μm
 Showa Memorial p.
 Tokyo, 2001
 | 
|   Unidentified sp.
 5 x 3.5-4 μm
 Yokonuma
 Sakado
 Saitama, 2004
 |   Unidentified sp.
 4 x 3 μm
 Kinchakuda
 Hidaka
 Saitama, 2004
 |