Gamophyceae: Zygnematales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)
Family: Cell wall with 2 or more partitions.
Subfamily: Cell division occurs at central constriction.
Genus: Cell body short, radiate in shape; apical view of the cell, triangular, polygonal,
ellipsoidal or spindle-shaped; zygospores formed outside of mother cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Staurastrum, with seven arms, x 400, x 640, Uruguay Nov. 1999, photo by Yuuji Tsukii
150 μm; x 400 :
94 μm; x 640
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