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Chlorophyceae: Chlorococcales: Scenedesmaceae

Crucigenia quadrata
Morren var. quadrata

Crucigenia Genus: Arrangement of 4 daughter cells flat and rectangular in shape, forming composite coenobium; without gelatinous sheaths, no hairly projections (Illustrations of the Japanese Freshwater Algae, 1977).
Species: Colonies circular in outline, with a small rectangular space at the center; cell body nearly spherical or triangular, 3-7 μm long, 3-6 μm wide; chloroplasts 1-4, parietal disciform, with a pyrenoid (Photomicrographs of the Freshwater Algae, vol. 3, 1985).

Crucigenia quadrata Morren var. quadrata, cell body 4.5-6 μm long, 4-5 μm wide, x 640, a small pond near Yamaguchi university, Yamaguchi city, Yamaguchi Pref., November 21, 2004, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Crucigenia quadrata Crucigenia quadrata

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