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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum apiculatum
Brébisson
= Staurodesmus apiculatus (Joshua) Islam & Haroon (Ling & Tyler, Australian Freshwater Algae, 2000)
= Std. dejectus (Ralfs) Teiling var. apiculatus (Bréb.) Teiling (Coesel & Meesters, Desmids of the Lowlands, 2007)

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 17-25 μm long, 17-25 μm wide (without spines), isthmus 5.6-8 μm wide,
Similar species -->> S. connatum;

Staurastrum apiculatum Brébisson ?, cell body μm long, μm wide, L/W=, isthmus μm wide, x 640, Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum apiculatum Staurastrum apiculatum

Images of collecting locality: Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii

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