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Chlorophyceae: Chlorococcales: Chlorococcaceae (Oocystaceae)

Tetraedron minimum
(A. Braun) Hansgirg var. minimum

Scenedesmus Genus: Cell body short, radiate in shape; apical view of the cell, triangular, polygonal, ellipsoidal or spindle-shaped; zygospores formed outside of mother cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Unicellular, planktonic; cell body flat, quadrangular in shape, four sides depressed and four corners with small papillae; a single chloroplast plate-like, with a pyrenoid (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Similar genus -->> Tetraedriella (Xanthophyceae); Goniochloris (Xanthophyceae);

Tetraedron minimum var. minimum, cell body 9 μm long, 8.5 μm wide, x 400, x 640, Kaga city, Ishikawa Pref., Japan, 2000 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

Tetraedron minimum Tetraedron minimum Tetraedron minimum Tetraedron minimum

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