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Gamophyceae: Zygnematales: Desmidiaceae

Xanthidium sp.

Xanthidium Genus: Variable in shape; strong constriction at center; semicell ellipsoidal, polygonal, etc.; cell wall with simple or branching spines, most of them laterally aligned; 4 plate-like chloroplasts in each semicell; one or more pyrenoids in each chloroplast (Illustrations of The Japanese Fresh-water Algae, 1977).

Xanthidium sp. (or Staurastrum ?), cell body 31 μm long, 21 μm wide (excluding spines), L/W=1.5, x 400, x 640, Uruguay, November 1999, photo by Yuuji Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Xanthidium Xanthidium

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