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Gamophyceae: Zygnematales: Desmidiaceae

Arthrodesmus convergens
Ehrenberg ex Ralfs
= Staurodesmus convergens (Ehrenberg ex Ralfs) Teiling 1948 (Ling & Tyler 2000; John et al. ed. 2002)
= Staurodesmus convergens (Ehrenberg ex Ralfs) S. Lillieroth (Coesel & Meesters 2007)

Arthrodesmus sublatus 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:


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

Arthrodesmus convergens Ehrenberg var. convergens, 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
Arthrodesmus 31 μm Arthrodesmus 63 μm Arthrodesmus 94 μm; x 640
Arthrodesmus convergens Arthrodesmus convergens

Images of collecting locality: Kareki-numa marsh, Nikko city (formerly Fujiwara town), Tochigi Pref., Japan, August 2, 2008 by Eizaburo Tsukii


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