image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Cosmarium angulosum
Brébisson var. angulosum

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 var. angulosum, cell body 20 μm long, 17 μm wide, L/W=1.2, isthmus 5 μm wide, x 640, rice field, near Ichinoseki Railroad Station, Ichinoseki city, Iwate Pref., Japan, July 24, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium angulosum Cosmarium angulosum
Cell body 22 μm long, 18 μm wide, L/W=1.2, isthmus 5 μm wide, x 640
Cosmarium angulosum Cosmarium angulosum

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