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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium macilentum
Brébisson var. macilentum

Closterium macilentum Species [var. macilentum ]: Cell body large, elongated, both side nearly straight at central region, slightly tapered and curved toward ends, 260-(432-678)-800 μm long, 11-(14-21)-25 μm wide, L/W=25-40; cell wall smooth, transparent, bands present; 6-15 pyrenoids in each semicell.
[ var. japonicum ]: Cell body wider at the center and narrower at ends than var. macilentum, 400-(447-5780-600 μm long, 23-(32-34) μm wide, L/W=12-18 (Illustrations of The Japanese Fresh-water Algae, 1977).


Closterium macilentum Brébisson var. macilentum ?, cell body 210 μm long, 10.5 μm wide, L/W=20, x 400, x 640, rice field near Naruto-Togane carnivorous plant colony (marsh), Sanmu city (formerly Naruto town), Chiba Pref., Japan, November 5, 2006 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium macilentum Closterium macilentum

Images of collecting locality: Rice field near Naruto-Togane carnivorous plant colony (marsh), Sanmu city (formerly Naruto town), Chiba Pref., Japan, November 5, 2006 by Y. Tsukii


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