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Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium binum
Nordsted var. binum

Species: Cell body 46-62 μm long, 36-45 μm wide, L/W= 1.25-1.33; semicells pyramidate-trapeziform, apex trucated and 4-6 crenate, lateral margins convex, 6-8 crenate, all the crenations consist of bigranules or emarginations, bicrenate granules arranged radially from the center, which locates just above the isthmus; the 6-7 vertical series of granulte ridges present at the center; side view of the semicells ovate-oblong, convexing at the center for both side; vertical view elliptic-oblong (Photomicrographs of the Freshwater Algae, vol. 3, 1985).
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Cosmarium binum
C. binum
58 x 46 μm
L/W=1.3
Water field
Kusu
Oita, 2008
Cosmarium binum
C. binum
55 x 43 μm
L/W=1.3
rice field
Ichinoseki
Iwate, 2005
Cosmarium binum
C. binum
59 x 43 μm
L/W=1.4
riverside park
Abukuma river
Fukushima, 2005
Cosmarium binum
C. binum
μm
L/W=
Omine numa
Tsukiyono
Gunma, 2003
Cosmarium binum
C. binum
55 x 41 μm
L/W=1.3
Saitama, 1999
Cosmarium binum
C. binum
53 x 43 μm
L/W=1.2
near City Hall
Fujimi
Saitama, 2004
Cosmarium binum
C. binum
58 x 42 μm
L/W=1.4
near Murakuni ike
Iwatsuki-bunka p.
Saitama, 2006
Cosmarium binum
C. binum
57 x 41 μm
L/W=1.4
Aquatic botanical g.
Sawara
Chiba, 2004
Cosmarium binum
C. binum
58 x 42 μm
L/W=1.4
Aquatic botanical g.
Sawara
Chiba, 2004
C. binum
cell μm
L/W=
Japan, 1998
Cosmarium binum
C. binum
x 41 μm
L/W=
Lake Nakatsuna 2
Omachi
Nagano, 2007
Cosmarium
C. binum
47 x 33 μm
L/W=1.4
Kabuto-yama
Nishi-no-miya
Hyogo, 2004
Cosmarium binum
C. binum
56 x 42 μm
L/W=1.3
Hiroshima, 1998
Cosmarium binum
C. binum
62 x 44 μm
L/W=1.4
Kayoicho-ike
Fukuoka, 2001
Similar species -->> C. subspeciosum var. validius; C. quadrifarium;

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Cosmarium binum
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