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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum

Subgenus: Eustaurastrum

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.
Subgenus: with arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Section: Glabriformes (Arm-like projections smooth)
Staurastrum
S. brachiatum
16 samples
22-35 x μm
2004-2008
Staurastrum
S. subtilissimum ?
x 15 μm
Omine-numa
Tsukiyono
Gunma, 2004
Section: Processiformes (Arm-like projections granulated or dented)
2 arm-like projections
Staurastrum Staurastrum Staurastrum Staurastrum
S. johnsonii, S. leptocladum, S. subparvulum, S. biexcavatum, S. iotanum (2 or 3), S. leptocladumm, S. playfairi, S. tetracerum (2 or 3), S. sp.1
3 arm-like projections
Staurastrum dorsidentiferum Staurastrum Staurastrum pseudosebaldi Staurastrum
S. aculeatum, S. anatinum, S. dorsidentiferum, S. gracile, S. inflexum, S. iotanum (2 or 3), S. longiradiatum, S. oxyacanthum, S. pseudosebaldi, S. polymorphum, S. sebaldi, S. tetracerum (2 or 3), S. vestitum (2 or 3), S. sp. 1-3
4 arm-like projections
Staurastrum Staurastrum Staurastrum Staurastrum
S. bibrachatum, S. crenulatum, S. dentatum, S. margaritaceum, S. proboscideum, S. rhynchoceps, S. zonatum, S. polymorphum, sp.1-7
5 arm-like projections
Staurastrum
Staurastrum sp.
S. arachne ?
μm
USA, 1999
Staurastrum arachne
S. arachne
6 samples
x 40-48 μm
2006-2008
Staurastrum incisum
S incisum
5 samples
23- μm
1999-2005
Staurastrum
S. asteroideum
3 samples
22-36 x μm
2004-2005
Staurastrum
Staurastrum sp.
2 samples
22-25 x μm
2007
Staurastrum
S. crenulatum
v. continentale ?
μm
Kejo-numa
Furukawa
Miyagi, 2003
Staurastrum
S. incurvum
25 x 30 μm
Kenashitai
Hakkoda mountain
Aomori, 2005
Staurastrum acanthastrum
S. acanthastrum
μm
Water reservoir
Nakatsugawa
Gifu, 2008

6 arm-like projections
Staurastrum
S pentacrinum
μm
USA, 1999
Staurastrum asterias
S asterias
5 samples
μm
1999-2003
7 arm-like projections or arm number unidentified
Staurastrum
S. rotula
μm
Uruguay, 1999
Staurastrum
Staurastrum sp.
μm
Uruguay, 1999
Staurastrum
Staurastrum sp.
x 640
Uruguay, 1999
Section: Radiatiformes (Apexes of semicells with projections; arm-like projections smooth)
Staurastrum arctiscon
S. arctiscon
μm
Lake Biwa
Maibara
Shiga, 2008
Staurastrum
S tohopekaligense
4 samples
μm
1998-2008
Staurastrum subarmigerum
S. subarmigerum
30 x μm
Kashibaru m.II
Karatsu
Saga, 2008
Staurastrum
S. hantzii
v. japonicum
27 x μm
Imou bog
Toyohashi
Aichi, 2004
Staurastrum forficulatum
S. hantzii
v. japonicum
30 x μm
Kareki-numa
Nikko
Tochigi, 2008.9
Staurastrum gemelliparum
S. gemelliparum ?
20 x 20 μm
Kashibaru m.5
Karatsu
Saga, 2006
Section: Hoplastrum (Apexes of semicells with projections; arm-like projections granulated or dented)
Staurastrum sexangulare
S. sexangulare
9 samples
37-60 μm
1998-2008

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Staurastrum
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