Genus:
Cell body small, length = width, strong constriction at its center;
semicells inverted triangular, ellipsoidal, rectangular, etc. in shape; straight or slightly curved
spiny projections at each corner; one pyrenoid in each semicell; cell wall smooth
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: |
31 μm
63 μm
94 μm; x 640
Arthrodesmus octocornis Ehrenberg,
cell body 29 μm long, 26 μm wide, L/W=1.1 (including spines),
cell body 20 μm long, 15 μm wide, L/W=1.3 (excluding spines),
isthmus 6 μm wide,
x 640, Kumakubo, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, December, 2005, collected by Eizaburo Tsukii, photo by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Daughter cells, x 640
