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Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium reniforme
(Ralfs) Archer var. reniforme

Cosmarium reniforme 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 [ var. reniforme ]: Cell body medium in size, slightly longer than width, (47-56)-57 μm long, (32-34.4)-38-40 μm wide, isthmus 15-(17)-20 μm wide; semicells reniform, side view circular, apical view elliptical; cell wall covered with granules (Illustrations of The Japanese Fresh-water Algae, 1977).


Cosmarium reniforme (Ralfs) Archer var. reniforme, cell body 44 μm long, 40 μm wide, isthmus 15 μm wide, x 640, Koyama River, Kodama town, Saitama Pref., Japan, June 2003 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
Cosmarium reniforme Cosmarium reniforme Cosmarium reniforme Cosmarium reniforme
Cosmarium reniforme Cosmarium reniforme Cosmarium reniforme Cosmarium reniforme Cosmarium reniforme


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