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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium moniliferum
(Bory) Ehrenberg ex Ralfs 1848

Species: Cell body moderately curved, gradually attenuated toward ends, which are broadly rounded, inner margin slightly inflated in the middle, outer margin strongly convex, 204-384 μm long, 36-60 μm wide, L/W=4.6-8; chloroplasts with 4-6 longitudinal ridges and 4-7 pyrenoids in each semicell; cell wall smooth and colorless; zygospores ellipsoid with a smooth wall (Photomicrographs of the Freshwater Algae, vol. 7, 1987). Cell body 170-450 μm long, 28-72 μm wide, L/W=6-8 (Illustrations of The Japanese Fresh-water Algae, 1977).
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1) Cell body moderately curved; L/W > 7
Closterium moniliferum
var. moniliferum
430 x 53 μm
L/W=8.1
Onnenai
Kushiro marsh
Hokkaido, 2005
Closterium moniliferum
var. moniliferum
320 x 43 μm
L/W=7.4
Oura central p.
Oura
Gunma, 2006
Closterium moniliferum
var. moniliferum
280 x 35 μm
L/W=8.0
near Kodanuki m.
Fujinomiya
Shizuoka, 2005
Closterium moniliferum
var. moniliferum
280 x 37 μm
L/W=7.6
Oyomi marsh
Hakuba
Nagano, 2006
Closterium moniliferum
var. moniliferum
222 x 30 μm
L/W=7.4
near Oyomi marsh
Hakuba
Nagano, 2004
Closterium moniliferum
var. moniliferum
240 x 34 μm
L/W=7.1
Saitama, 2003
2) Cell body moderately curved; L/W = 6-7; body > 300 μm
Closterium moniliferum
v. moniliferum
13 samples
260-380 μm
2002-2008
Closterium moniliferum
v. moniliferum
13 samples
260-380 μm
2002-2008
Closterium moniliferum
v. moniliferum
13 samples
260-380 μm
2002-2008
Closterium moniliferum
v. moniliferum
13 samples
260-380 μm
2002-2008
3) Cell body moderately curved; L/W = 6-7; body < 300 μm
Closterium moniliferum
v. moniliferum
24 samples
208-290 μm
1998-2006
Closterium moniliferum
v. moniliferum
24 samples
208-290 μm
1998-2006
Closterium
v. moniliferum
24 samples
208-290 μm
1998-2006
Closterium moniliferum
v. moniliferum
24 samples
208-290 μm
1998-2006
4) Cell body moderately curved; L/W=5-6
Closterium
v. moniliferum
11 samples
190-337 μm
1998-2006
Closterium moniliferum
v. moniliferum
11 samples
190-337 μm
1998-2006
Closterium moniliferum
v. moniliferum
11 samples
190-337 μm
1998-2006
Closterium moniliferum
v. moniliferum
11 samples
190-337 μm
1998-2006
5) Cell body strongly curved; inner side concave; both ends long & tapered
Closterium
var. concavum
or C. ehrenbergii ?
371 x 49 μm
L/W=7.6
Fujimi
Saitama, 2004
Closterium
var. concavum ?
or C. leibleinii ?
228 μm
L/W=7.4
Japan, 1999
Closterium
var. concavum ?
or C. leibleinii ?
240 x 35 μm
L/W=6.8
Kawagoe
Saitama, 2002
Closterium moniliferum
var. concavum ?
or C. leibleinii ?
220 x 33 μm
L/W=6.7
Kodama town
Saitama, 2003
Closterium
var. concavum ?
205 x 28 μm
L/W=6.3
Uruguay, 1999
6) Cell body short; L/W < 5
Closterium moniliferum
C. moniliferum ?
155 x 33 μm
L/W=4.7
Shakujii Park
Tokyo, 2001
Closterium
var. moniliferum
or C. leibleinii ?
230 x 41 μm
L/W=5.6
both ends inverted
near City Hall
Fujimi
Saitama, 2004
7) Cell body long; L/W > 8
Closterium
C. moniliferum ?
270 x 30 μm
L/W=9.0
Ikenokochi marsh
Tsuruga
Fukui, 2004
Similar species -->> C. dianae; C. leibleinii; C. ehrenbergii;

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Closterium moniliferum
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