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Xanthophyceae: Mischococcales: Pleurochloridaceae

 Tetraedriella spinigera
Skuja

Tetraedriella Genus: Unicellular; planktonic; cell body tetrahedron in shape; each corner drawn out to form a projection; many chloroplasts disc-shaped, without pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:
Similar genus -->> Tetraplektron; Tetraedron;

Tetraedriella spinigera Skuja (Pleurochloridaceae, Mischococcales, Xanthophyceae), cell body 55 μm wide between projections, chloroplasts small, parietal, disc-shaped, without pyrenoids, x 640, Shikinawa-ike (pond, near Kayoicho Park), Kasuya town, Fukuoka Pref., Japan, October 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Tetraedriella Tetraedriella Tetraedriella Tetraedriella Tetraedriella Tetraedriella

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