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Chlorophyceae: Chlorococcales: Micractiniaceae

 Golenkinia sp.

Golenkinia Genus: Unicellular, but autospore may become temporary colonical; planktonic; cell body spherical with many elongated spiny projections; a single chloroplast cup-shaped, with a single pyrenoid (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Vegetative cells spherical, 8-10 μm diam., with short spines 20-40 μm long, 1 chloroplast cup-shaped, 1 pyrenoid (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar genus --> Franceia; Acanthosphaera; Micractinium; Errerella; Chodatella;

Golenkinia sp. (or Franceia ??), cell body spherical, 15 μm in diam., harly projections about 30 μm long, x 640, Nakayado historical park, Oka, Okabe-cho, Fukaya city (formerly Okabe town), Saitama Pref., Japan, April 15, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Golenkinia

Images of collecting locality: Nakayado historical park, Oka, Okabe-cho, Fukaya city (formerly Okabe town), Saitama Pref., Japan, April 15, 2006 by Y. Tsukii

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