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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium navicula
(Brébisson) Lütkemüller

Species: Cell body not curved, spindle or boat in shape; 24-(35-84)-93 μm long, 8-(11-20)-22 μm wide; L/W = 3-4; a single chloroplast and 1 or 2 pyrenoids in each semicell (Illustrations of The Japanese Fresh-water Algae, 1977).
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Closterium navicula
C. navicula
35 x 10 μm
L/W=3.5
near Omine-numa
Minakami
Gunma, 2006
Closterium navicula
C. navicula
49 x 13 μm
L/W=3.8
near Omine-numa
Minakami
Gunma, 2007
Closterium navicula
C. navicula
33 x 11 μm
L/W=3.0
Ohnuma enchi
Nasu-shiobara
Tochigi, 2006
Closterium
C. navicula
47-56 x 14 μm
L/W=3.4-4.0
Numa-no-hara m.
Madarao highland
Niigata, 2005
Closterium navicula
C. navicula
56 x 15 μm
L/W=3.7
Forest botanical g.
Togakushi highland
Nagano, 2006
Closterium navicula
C. navicula
55 x 13 μm
L/W=4.2
Tane-ike
Togakushi highland
Nagano, 2006
Closterium navicula
C. navicula
58 x 13 μm
L/W=4.5
Suwa
Togakushi highland
Nagano, 2007
Closterium navicula
C. navicula
or C. libellula ?
88 x 17 μm
L/W=5.2
Omine-numa
Tsukiyono
Gunma, 2003
Similar species -->> C. libellula;

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Closterium navicula
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