image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium punctulatum
Brébisson punctulatum
Cosmarium punctulatum 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[ punctulatum ]: Cell body 34-41 μm long, 31-35 μm wide, isthmus 8-10 μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).
Cosmarium punctulatum Brébisson punctulatum (or C. orthosticum Lundell var. subpolonica Messikommer ??), cell body 30 μm long, 27 μm wide, isthmus 10 μm wide, 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 punctulatum Cosmarium punctulatum Cosmarium punctulatum

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