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Chlorophyceae: Chlorococcales: Scenedesmaceae

Crucigenia tetrapedia
(Kirchner) W. et G.S. West

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 of 4 cells; cell body triangular in shape, 4-10 μm wide; a single chloroplast plate-like, with a pyrenoid (Illustrations of the Japanese Freshwater Algae, 1977).


Crucigenia tetrapedia (Kirchner) W. et G.S. West, colonies disc-shaped, about 12 μm in diam., x 640, Green-Park, Nishi-Urawa, Saitama Pref., Japan, June 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Crucigenia tetrapedia Crucigenia tetrapedia Crucigenia tetrapedia

Crucigenia tetrapedia (Kirchner) W. et G.S. West, colonies ellipsoidal, about 8 μm long, 6 μm wide, cell body 3 μm long, 4 μm wide, x 640, Bessho-numa, Saitama Pref., Japan, June 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Crucigenia tetrapedia Crucigenia tetrapedia


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