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 37 μm long, 28 μm wide, x 640, near Eai-gawa (Eai river), Ishinazaka, Furukawa city, Miyagi Pref., Japan, November 2003 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 angulosum Cosmarium angulosum

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