image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium repandum
Nordstedt f. minor W. et G.S. West

Cosmarium repandum 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:

Cosmarium repandum Nordstedt f. minor W. et G.S. West or similar species, cell body 21 μm long, 13 μm wide, L/W=1.6, isthmus 3 μm wide, x 640, water reservoir, Kumakubo, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, August 21, 2005, collected by Eizaburo Tsukii, photo by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium

Please click on images for viewing enlarged.
Copyright Protist Information Server