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Chlorophyceae: Chlorococcales: Chlorococcaceae (Characiaceae)

 Characium sp.

Characium Genus: Unicellular; cell body ellipsoidal or spindle-shaped, attached on a substrate at one end; a single chloroplast plate-like in shape, with a pyrenoid (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:
Similar genus --> > Colacium; Characiopsis; Characiochloris; Hydiranum;

Characium sp. or Characiochloris sessilis (Korshikov) Pascher 1927, cell body 21-23 μm long, 9-13 μm wide, x 640, rice field, near Waku-waku dome, Hamasaki, Asaka city, Saitama Pref., Japan, May 30, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Characium Characium Characium Characium Characium

Characiochloris: Chloroplasts longitudinally divided (The Freshwater Algal Flora of the British Isles 2002).

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