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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium acerosum
var. minus Hantzsch

Closterium acerosum 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 (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:


Closterium acerosum var. minus Hantzsch ?, cell body 300 μm long, 40 μm wide, L/W=7.5, x 400, x 640, Japan, April 1999, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Closterium Closterium
scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium Closterium


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