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Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium lundellii
Delponte var. circulare (Reinsch) Krieger

Cosmarium lundellii Genus: Unicellular; variable in shape; a constriction at the center of the cell body; mostly longer than wide; flattened; each semicell hemispherical, spherical, ellipsoidal, rectangular, pyramidal or kidney-shaped; no apical indentation (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: (Illustrations of The Japanese Fresh-water Algae, 1977).
Similar species -->> C. pachydermum;

Cosmarium lundellii Delponte var. ??, cell body 57 μm long, 48 μm wide, isthmus 21 μm wide, x 400, x 640, rice field, Higashi-sano (near Minami-kamishiro railway station), Hakuba village, Nagano Pref., Japan, October 3, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium Cosmarium Cosmarium

Cosmarium lundellii Delponte var. circulare (Reinsch) Krieger: (Illustrations of the Japanese Fresh-water Algae, 1977)

Cosmarium lundellii Delponte var. corruptum (Turner) W. et G.S. West: (Illustrations of the Japanese Fresh-water Algae, 1977)

Cosmarium lundellii Delponte var. pachydermum Hinode: (Illustrations of the Japanese Fresh-water Algae, 1977)

Cosmarium lundellii Delponte var. ellipticum W. West: (Illustrations of the Japanese Fresh-water Algae, 1977)

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