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Gamophyceae: Desmidales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)

 Micrasterias crux-melitensis
(Ehrenberg) Hassall ex Ralfs var. crux-melitensis

Micrasterias crux-melitensis Genus: Cell body flat, large, variable in shape, longer than wide; strong constriction at center; each semicell with several notches; cell wall with many short spines (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: 102-129 μm long, 84-124 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Micrasterias crux-melitensis (Ehrenberg) Hassall ex Ralfs 1848 var. crux-melitensis, cell body 130 μm long, 108 μm wide, L/W=1.2, isthmus 22 μm wide, x 400, x 640, Higusa-numa (swamp), Miyakawa, Hikari town, Chiba Pref., Japan, November 5, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Micrasterias crux-melitensis Micrasterias crux-melitensis Micrasterias crux-melitensis Micrasterias crux-melitensis

Images of collecting locality: Higusa-numa (swamp), Miyakawa, Hikari town, Chiba Pref., Japan, November 5, 2006 by Y. Tsukii

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