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Cyanophyceae: Chroococcales: Chroococcaceae
Cyanophyceae: Chroococcales: Microcystaceae

Microcystis
Kützing ex Lemmermann 1907 nom. cons.

Order & Family: Floating unicells or a colony embedded in a matrix; no differentiation of apical and base structures; only one family.
Genus: A colony of spherical cells; each cell is not covered with a sheath, instead cells are scattered within a gelatinous matrix; the distance between cells is usually shorter than their diameter (Illustrations of The Japanese Fresh-water Algae, 1977).
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Cell body larger than 3 μm in diam.
Microcystis
Microcystis sp.
Umi-no-nakamichi
Fukuoka, 2001
Microcystis
Microcystis sp.
μm
Tsuchiura
Ibaraki, 2002
Microcystis
Microcystis sp.
4-6 μm
Koshigaya
Saitama, 2001
Microcystis
Microcystis sp.
4.5-5 μm φ
Kaga
Ishikawa, 2000
Microcystis
Microcystis sp.
μm
Zenko-ji
Nagano, 2003
Microcystis
Microcystis sp.
μm
Saitama, 1999
Microcystis
Microcystis sp.
4-5 μm φ
Saiko
Toda
Saitama, 2005
Microcystis
Microcystis sp.
μm
Japan, 2000
Microcystis
Microcystis sp.
μm
Tochigi, 2001
Microcystis
Microcystis sp.
5-6 μm φ
Katakai-numa
Zao onsen
Yamagata, 2008
xxxx
Microcystis sp. ?
μm
Tachikawa
Tokyo, 2001
Chroococcus
Microcystis sp. ?
μm φm
Shiroyama Park
Okegawa
Saitama, 2002
Chroococcus
Microcystis sp. ?
μm
Wakamiya Park
Matto
Ishikawa, 2002
xxxx
Microcystis sp. ?
μm
Kozuki Pond
Takamatsu
Kagawa, 2002
Unidentified
M. marginata ?
7 x 5.5 μm
Niigata, 2001
Unidentified
M. flos-aquae ?
or M. marginata ?
μm
Saitama, 1999
Microcystis flos-aquae
M. flos-aquae
or Aphanocapsa ?
μm
Mashiko
Tochigi, 1999
Microcystis flos-aquae
M. flos-aquae
or Aphanocapsa ?
6-7 μm
Showa Memorial p.
Tokyo, 2001
Microcystis
M. flos-aquae
8-9 x 7 μm
Chiba-Minato Park
Chiba, 2003
Microcystis
Microcystis ?
4.5 x 3.5 μm
Tochigi, 2001
Microcystis
Microcystis sp.1
3 μm φm
Kashiwa
Chiba, 2002
Microcystis
Microcystis sp.
4-4.5 x 3-3.5 μm
Senganpi Suigo p.
Saitama
Saitama, 2005
Cell body smaller than 3 μm in diam.
Microcystis
Microcystis sp.3
μm
Uruguay, 1999
Microcystis
M. convoluta ?
μm
Uruguay, 1999

Microcystis sp.4
μm
Kuroiso
Tochigi, 2001
Microcystis
Microcystis sp.4
μm
Seseragi Park
Musashi-Urawa
Saitama, 2002
Microcystis
Microcystis sp.5
μm
Japan, 1998
Microcystis
Microcystis ?
μm
Chikozan park
Saitama, 2001
Microcystis
Microcystis sp.
μm
Numappara marsh
Kuroiso
Tochigi, 2003
Microcystis
Microcystis sp.
μm
Numappara marsh
Kuroiso
Tochigi, 2003
Microcystis
Microcystis sp.
2-4 μm
Iyari marsh
Omachi
Nagano, 2007
Microcystis
Microcystis ?
μm
Fujimi-hotaru-shinsui
Okegawa
Saitama, 2006
Microcystis
Microcystis ?
μm
Tane-ike
Togakushi highland
Saitama, 2006

Microcystis
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