image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium ornatum
Ralfs var. ornatum

Cosmarium ornatum Species: Cell body deeply constricted, 32-40 μm long, 35-41 μm wide, constriction (isthmus) 11-13 μm wide, semicells reniform, apex slightly elevated and truncate, lateral margins convex and convergent upward, apex, lateral margins and the center of the semicells furnished with granules, other parts of cell walls smooth (Photomicrographs of the Freshwater Algae, vol. 3, 1985).

Cosmarium ornatum Ralfs, cell body 29 μm long, 33 μm wide, constriction (isthmus) 10 μm wide, x 400, x 640, Vermont-Maine U.S.A., August 7-13, 1999, 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 Cosmarium Cosmarium Cosmarium

Cosmarium ornatum Ralfs: Cell body deeply constricted, 32-40 μm long, 35-41 μm wide, constriction (isthmus) 11-13 μm wide, semicells reniform, apex slightly elevated and truncate, lateral margins convex and convergent upward, apex, lateral margins and the center of the semicells furnished with granules, other parts of cell walls smooth (Photomicrographs of the Freshwater Algae, vol. 3, 1985).
Cell body (32-39)-40 μm long, 33-(36-41) μm wide, isthmus 10-(11-13) μm wide, (Illustrations of the Fresh-water Algae, 1977).

Please click on images for viewing enlarged.
Copyright 1999 Yuuji Tsukii