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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, cell body 9 μm min. wide, 12 μm max. wide, x 640, Shinobazu-ike (pond), Ueno, Taito-ku, Tokyo, Japan, March 2001 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


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