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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum lunatum
Ralfs 1848

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

Species: Cell body 25-47 μm long, 26-50 μm wide, isthmus 8-11 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977)
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Staurastrum
S. lunatum
28 x 29 μm
Kejo-numa
Furukawa
Miyagi, 2003
Staurastrum lunatum
S. lunatum
33 x 33 μm
Kejo-numa
Furukawa
Miyagi, 2006
Staurastrum
S. lunatum
33 x 30 μm
Ishinazaka
Furukawa
Miyagi, 2003
Staurastrum
S. lunatum
?? x 33 μm
30 x 30 μm
Dojo-ike
Norikura highland
Nagano, 2006
Staurastrum lunatum
S. lunatum
μm
Dojo-ike
Norikura highland
Nagano, 2007
Staurastrum
S. lunatum
29 x ?? μm
Maimeno-ike
Norikura highland
Nagano, 2006
Similar species -->> S. connatum;

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Staurastrum lunatum
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