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Cyanophyceae: Chroococcales: Chroococcaceae

 Chroococcus limneticus
Lemmermann

Chroococcus Genus: Unicells or a colony of spherical cells covered with a distinct sheath.
Species: Colonies consisting of many cells lacking definite layers; cells gathered at the center of the colonies; cell body (excluding sheath) larger than 6 μm in diameter (Illustrations of The Japanese Fresh-water Algae, 1977).

Chroococcus limneticus Lemmerman, cell body nearly spherical, about 7 μm in diam., x 640, Iroha-numa (marsh), Zao mountain, Yamagata city, Yamagata Pref., Japan, July 9, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Chroococcus Chroococcus Chroococcus
Cell body nearly spherical, about 7 μm in diam., x 640
Chroococcus Chroococcus

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