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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium lanceolatum
Kützing

Closterium lanceolatum 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: Cell body slightly curved, inner-side nearly straight; L/W= 6-8; cell wall smooth, transparent; chloroplasts with 5-10 laminae; 6-8 pyrenoids in each semi-cell; 200- (240-400) -540 μm long, 28- (30-52) -79 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).


Closterium lanceolatum, cell body 568 μm long, 120 μm wide, L/W=4.7, x 100, x 200, x 400, wetland at Ichinose-enchi, Norikura highland, Azumi village, Nagano Pref., Japan, May 28, 2005 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 Closterium Closterium
Cell body μm long, μm wide, L/W=, x 200 ?
Closterium


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