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Chlorophyceae: Chlorococcales: Palmellaceae

Sphaerocystis sp.

Sphaerocystis Genus: Colonies small, spherical or aggregates in shape; sheath inconspicuous or absent; cell body spherical in shape; chloroplasts cup-shaped or plate-like (Illustrations of the Japanese fresh-water algae, 1977).

Sphaerocystis sp. or Trebouxia or Apiocystis ?, cell body spherical, 10-12 μm in diam., a single chloroplast parietal, with a single pyrenoid, x 640, Minuma Natural Park, Saitama city (Urawa), Saitama Pref., Japan, May 2002 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
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Sphaerocystis schroeteri Chodat: Colonies sherical in shape, consisting of 4-16 cells, 30-80 μm in diam.; cell body spherical, 5-12 μm in diam.; a single chloroplast cup-shaped with a pyrenoid (Illustrations of the Japanese fresh-water algae, 1977).

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