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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum gracile
Ralfs 1848

Subgenus: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species [ var. gracile ]: Cell body 28-47 μm long, 39-77 μm wide (including arms), isthmus 8.4-11 μm;
[ var. coronulatum Boldt ]: Cell body 26-28 μm long, 34-41 μm wide (including arms), isthmus 6.5-10 μm;
[ var. ornatum Krieger ]: Cell body 38.7 μm long, 62.4 μm wide (including arms), isthmus 13 μm; a pair of warts present at each posterior margin of semicells (Illustrations of The Japanese Fresh-water Algae, 1977)
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Staurastrum gracile
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