Species: Cell body elongated spindle-shaped, 220-(240-312) μm long, (10-11)-14 μm wide, L/W=20-26
(cf. C. strigosum,150-410 μ L/W=10-18);
cell wall transparent, smooth; chloroplasts with 3-6 pyrenoids
(Illustrations of The Japanese Fresh-water Algae, 1977).
Cell body (110-)150-250(-310) μm long, (6-)8-12(-14) μm wide;
L/W=(12-)15-30(-35),
(Coesel & Meesters 2007).
Closterium idiosporum W. et G.S. West ,
cell body 278 μm long, 8 μm wide, L/W=34.8,
x 400, x 640, No.2, Ohyachi, Akita-Hachimantai, Kazuno city, Akita Pref., Japan, September 21, 2007 by Y. Tsukii 50 μm
100 μm
150 μm; x 400
Images of collecting locality:
No.2, Ohyachi, Akita-Hachimantai, Kazuno city, Akita Pref., Japan, September 21, 2007 by Y. Tsukii