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Chlorophyceae: Oedogoniales: Oedogoniaceae

 Oedogonium sp.

Oedogonium Order & Family: Filamentous algae; cell division occurs near septum and adds "apical cap" (folded structure near the septum) ; cell body cylindrical, laterally straight or wavy or swell at one end of the cell body ("capitellate") in some species; chloroplasts reticulated with many pyrenoids; asexual reproduction by zoospore; sexual reproduction by fertilization by egg and sperm; monoecious or dioecious.
Genus: linear filament without branching (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:
Similar Genus ->> Oedocladium

Oedogonium sp., cell body 65-103 μm long, 40 μm wide, L/W=1.6-2.6, x 200, x 400, x 640, Uchi-ike (a pond), Kitsunezuka, Kurihashi town, Saitama Pref., Japan, March 4, 2006 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
Oedogonium Oedogonium Oedogonium Oedogonium

Images of collecting locality: Uchi-ike (a pond), Kitsunezuka, Kurihashi town, Saitama Pref., Japan, March 4, 2006 by Y. Tsukii

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