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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium pronum

Closterium pronum Genus: Cell body crescent in shape (long, curved, tapered at both ends); cross section rounded; cell wall smooth or with longitudinal lines, bands on the cell wall in some species; chloroplast laminae ridged and radially arranged, which makes cross section star-shaped; pyrenoids aligned or scattered
Species: Cell body elongated spindle-shaped, μm long, μm wide, L/W=; cell wall transparent, smooth; chloroplasts with 3-6 pyrenoids


Closterium pronum , cell body 271 μm long, 7 μm wide, L/W=38.7, x 400, x 640, Kabuto-yama sizen-kansatsu ike (pond), Kabuto-yama, Nishi-no-miya city, Hyogo Pref., Japan, September 10, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium Closterium Closterium Closterium

Closterium sp., cell body 265 μm long, 6.5 μm wide, L/W=40.8, x 200, x 400, x 640, Kabuto-yama sizen-kansatsu ike (pond), Kabuto-yama, Nishi-no-miya city, Hyogo Pref., Japan, September 10, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium Closterium Closterium Closterium


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