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Chlorophyceae: Chlorococcales: Chlorococcaceae (Characiaceae)

Characium rabenhorstii
De Toni

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: Cell body ellipsoidal, anterior end rounded, 18-20 μm long, 4-5 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar genus --> > Colacium; Characiopsis; Characiochloris; Hydiranum;

Characium rabenhorstii De Toni (or Characiopsis Xanthophyceae ?), cell body cylindrical 30 μm long, 6 μm wide, with a short projection at one end about 8 μm long, x 640, Musashi-Urawa (near Shirahata-numa), Saitama Pref., Japan, June 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Characium rabenhorstii Characium rabenhorstii

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