image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium angulosum
Brébisson

Cosmarium angulosum Species [ var. angulosum ]: Cell body small, 14-31 μm long, 12.6-21 μm wide, L/W=1.5, isthmus 3.4-6 μm wide; semicells quadrate or hexagonal in shape.
[ var. concinnum ]: Smaller than var. angulosum, (11-12)-13 μm long, 8-12 μm wide, L/W=1.3, isthmus 2.6-4.5 μm wide (Illustrations of the Fresh-water Algae, 1977).

Cosmarium angulosum Brébisson ?, cell body 26 μm long, 14 μm wide, constriction 8 μm wide, x 400, x 640, Tsukuba city, Ibaraki Pref., Japan, October 2000, collected by N. Kinoshita, photo 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 angulosum Brébisson: Cell body small, 14-31 μm long, 12.6-21 μm wide, isthmus 3.4-6 μm wide, L/W=1.5; (Illustrations of the Fresh-water Algae, 1977).

Cosmarium braunii Reinsch: Cell body small, 42 μm long, 34 μm wide, isthmus 11 μm wide, L/W=1.25; (Illustrations of the Fresh-water Algae, 1977).

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