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Gamophyceae: Zygnematales: Zygnemataceae

Spirogyra
Link 1820

Family: Filamentous algae without branching; cell body cylindrical; chloroplasts band-, plate- or star-shaped (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Filament without branching; cell body cylindrical; one or several chloroplasts band-shaped, spirally arranged within the cell, pyrenoids present; septum with or without folded structure (Guide book to the "Photomicrographs of the Freshwater Algae", 1998). About 300 species (Illustrations of The Japanese Fresh-water Algae, 1977).
Google Image Search
Septum folded:
Spirogyra
Spirogyra sp.
1 chl. 5.5 turns
x 30 μm
Tsukamoto
Nishi-ku
Saitama, 2004
Spirogyra
Spirogyra sp.
1 chl. 6 turns
x 29 μm
Numa-no-hara m.
Madarao highland
Niigata, 2005
Spirogyra
Spirogyra sp.
1 chl. 7 turns
x 28 μm
near Takao-sakura p.
Kitamoto
Saitama, 2005
Spirogyra
Spirogyra sp.
1 chl. 6.5 turns
x 28 μm
Saitama, 2001
Spirogyra
Spirogyra sp.
1 chl. 8 turns
x 28 μm
Shobu
Saitama, 2004
Spirogyra
Spirogyra sp.
1 chl. 2.5 turns
x 28 μm
Kinu-gawa g. p.
Takanezawa
Tochigi, 2004
Spirogyra
Spirogyra sp.
1 chl. 4.5 turns
x 26 μm
Miyado
Asaka
Saitama, 2004
Spirogyra
Spirogyra sp.
1 chl. 5 turns
x 26 μm
Yasuji-kawa
Sawara
Chiba, 2004
Spirogyra
Spirogyra sp.
1 chl. 3-4 turns
x 22 μm
Nasuno-ga-hara m.
Nishi-nasuno
Tochigi, 2004
Spirogyra
Spirogyra sp.
1 chl. 6.5 turns
x 21,25 μm
Oura central p.
Oura
Gunma, 2006
Spirogyra
S. tumida ?
1 chl. 6 turns
x 18-20 μm
Kasukabe
Saitama, 2004
Spirogyra
S. arta ?
1 chl. 6 turns
x 20 μm
Saitama, 2001
Spirogyra
S. arta ?
1 chl. 7 turns
222 x 20 μm
Oyomi marsh
Hakuba
Nagano, 2006
Spirogyra arta
S. arta ?
1 chl. 6 turns
x 19 μm
Kinu-gawa g. p.
Takanezawa
Tochigi, 2004
Spirogyra
S. arta ?
1 chl. 8 turns
spherical nuc.
280 x 18 μm
Japan, 1998
Movies
Spirogyra
S. arta ?
1 chl. 4 turns
240 x 17 μm
Numa-no-hara m.
Madarao highland
Niigata, 2005
Spirogyra
S. arta ?
1 chl. 5.5 turns
126 x 17 μm
Satsunai river
Obihiro
Hokkaido, 2005
Spirogyra arta
S. tenuissima ?
1 chl. 4 turns
x 15 μm
Ishinazaka
Furukawa
Miyagi, 2003
Spirogyra
S. tenuissima
1 chl. 6 turns
158 x 14 μm
Tochigi, 1998
Spirogyra
S. tenuissima ?
1 chl. 4 turns
102 x 15 μm
Gyodashi-sogo
Gyoda
Saitama, 2006
Spirogyra
S. tenuissima ?
1 chl. 9 turns
280 x 15 μm
near Murakuni ike
Iwatsuki-bunka p.
Saitama, 2006

S. tenuissima
1 chl. 6 turns
x 15 μm
??, 2000
Spirogyra
S. tenuissima
1 chl. 4 turns
220 x 14 μm
near Karakemi m.
Omachi
Nagano, 2005
Spirogyra
Spirogyra sp.
1 chl. 6 turns
x 12 μm
Ukima
Tokyo, 2001
Spirogyra
Spirogyra sp.
1 chl. turns
x 12 μm
Shikinawa-ike
Fukuoka, 2001
Spirogyra
Spirogyra sp.
1 chl. turns
x 11.5 μm
Univ. A.V.M.
Obihiro
Hokkaido, 2005
Spirogyra
Spirogyra sp.
1 chl. 4.5 turns
x 13 μm
near Akai wetland
Aizuwakamatsu
Fukushima, 2005

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Spirogyra
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