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 μm long, μm wide, L/W=, isthmus μm wide,
x 640, Kareki-numa marsh, Nikko city (formerly Fujiwara town), Tochigi Pref., Japan, September 24, 2008 collected by Eizaburo Tsukii, photo by Y. Tsukii
31 μm
63 μm
94 μm; x 640
