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Chlorophyceae: Chlorococcales: Hydrodictyaceae

 Hydrodictyon reticulatum
(Linneus) Lagerheim (Illustrations of the Japanese fresh-water algae, 1977)
(Linnaeus) Bory de Saint-Vincent (Algaebase)

Hydrodictyon Genus: Colonies large, reticulated bag in shape (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cells arranged to form pentagonal or hexagonal intercellular space, which result in large reticulated bag; cell body cylindrical in shape (up to 1 cm long, 200 μm in diam.), with many nuclei; chloroplasts reticulated with many pyrenoids (Illustrations of The Japanese Fresh-water Algae, 1977).

Hydrodictyon sp., cell body μm long, μm wide, x 100, x 200, x 400, x 640, Binnuma River, Omiya City, Saitama Pref., Japan, September 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

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