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Chlorophyceae: Chlorococcales: Scenedesmaceae

 Crucigenia crucifera
(Wolle) Collins

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: Cell body curved reniform, 5-8 μm long, 3-5 μm wide (Illustrations of the Japanese Freshwater Algae, 1977).

Crucigenia crucifera (Wolle) Collins, cell body 7 μm long, 3.5 μm wide, x 640, Tane-ike (pond), Togakushi highland, Shinano town, Nagano Pref., Japan, June 12, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Crucigenia crucifera

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