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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum dejectum
Brébisson var. dejectum
= Staurodesmus dejectus (Brébisson ex Ralfs) Teiling 1967

Staurastrum 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)
Subgenus: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)

Species: Cell body (19.4-25)-27 μm long, 19.4-30 μm wide (without spines), constriction 6.4-11 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).

Staurastrum dejectum, cell body 20 μm long, 20 μm wide (excluding spines), L/W=1.0, spines 7 μm long, x 640, Otto-Numa (pond) Chosei-chi, Tsuchiura city, Ibaraki Pref., Japan, July 2002 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum

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