image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium subcucumis
Schmidle var. subcucumis

Cosmarium subcucumis 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: cell body (49-61)-78 μm long, (28-39)-45 μm wide, L/W = 1.5, constriction (17-20) μm wide, (Illustrations of The Japanese Fresh-water Algae, 1977).

Cosmarium subcucumis var. subcucumis (or C. microsphinctum Nordstedt ?), cell body 64 μm long, 43 μm wide, L/W = 1.5, isthmus 15.6 μm wide, x400, x 640, Hiroshima Pref., Japan, October 1998, 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

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