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Chlorophyceae: Chlorococcales: Chlorococcaceae (Oocystaceae)

Tetraedron
Kützing 1845

Family: Unicells; cell body spherical or broad ellipsoidal; chloroplasts 1 to several in number, cup-shaped or plate-like, reticulated or star-shaped; with or without pyrenoids; reproduction by autospores and zoospores; many species found in soil (Illustrations of The Japanese Fresh-water Algae, 1977).
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).
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Tetraedron
T. trigonum
10 samples
17-33 μm
1999-2005
Tetraedron
T. enorme
35 μm
Sue-machi
Fukuoka, 2001
Tetraedron enorme
T. enorme
32 μm
Kawashima
or Kawajima
Saitama, 2002
Tetraedron enorme
T. enorme
μm
Kashiwa Village p.
Kashiwa
Chiba, 2008
Tetraedron limneticum
T. limneticum ?
μm
O-ike park
Yabuki
Fukushima, 2003
Tetraedron
T. limneticum ?
μm
near Hachimantai Mt.
Senboku
Akita, 2007
Tetraedron limneticum
T. limneticum ?
μm
Kashibaru m.3
Karatsu
Saga, 2008
Tetraedron limneticum
T. limneticum ?
15 μm
Dedono-yu
Nishiwaga
Iwate, 2007
Tetraedron limneticum
T. limneticum ?
μm
Kareki-numa
Nikko
Tochigi, 2008
Tetraedron
T. incus
var. irregulare
6 samples
38-40 μm
2001-2006
Tetraedron
Tetraedron sp.
or Tetraedriella ?
32 μm
Ukima Park
Tokyo, 2001
Tetraedron caudatum
T. caudatum
var. incisum
μm
Akigase Park
Saitama, 2002
Tetraedron caudatum
T. caudatum ?
μm
Chiba-Minato Park
Chiba, 2003
xxxx
T. caudatum ?
10-13 x 7 μm
Shiba river
near Owada Park
Saitama, 2005
Tetraedron caudatum
T. caudatum ?
μm
near Dedono-yu
Nishiwaga
Iwate, 2007
Tetraedron caudatum
T. caudatum ?
μm
Kashiwa Village p.
Kashiwa
Chiba, 2008
Tetraedron
T. regulare
12 x 14 μm
USA, 1999
Tetraedron regulare
T. regulare
μm
Kodama
Saitama, 2003
Tetraedron regulare
T. regulare
μm
O-ike park
Yabuki
Fukushima, 2003
Tetraedron
T. triangulare
var. triangulare
30 μm
Sue-machi
Fukuoka, 2001
Tetraedron
T. triangulare
14 μm
Tsukuba
Ibaraki, 2002
Tetraedron
T. triangulare
13 μm
Musashi-Urawa
Saitama, 2002
xxxx
T. triangulare
12 μm
Tsukuba
Ibaraki, 2002
Tetraedron
T. tumidulum
or Tetraedriella ?
25 x 24 μm
Hasu-ike
Shiga highland
Nagano, 2005
Tetraedron
T. tumidulum
or Goniochloris ?
11 μm
Tokyo, 2001
Tetraedron
T. minimum
7 samples
5-12 μm
1999-2003
Similar genus -->> Tetraedriella (Xanthophyceae); Goniochloris (Xanthophyceae);

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Tetraedron
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