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Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium moniliforme
Turpin ex Ralfs 1848 (John et al. ed 2002)
(Turpini) Ralfs (Illustrations of The Japanese Fresh-water Algae, 1977)

Species [f. moniliforme]: Cell body 21-56 μm long, 11-29 μm wide, isthmus 4-11 μm wide, L/W=2; semicells spherical; cell wall smooth.
[f. punctata Lagerheim ]: Cell wall dotted; 24-43 μm long, 14-25 μm wide.
[f. elliptica Lagerheim ]: Cell body elongated, semicells broad ellipsoid in shape; 46-50 μm long, 28-32 μm wide.
[f. supyriforme W. et G.S. West ]: Semicells inverted ovoid, apex slightly flatted; 34-56 μm long, 21-23 μm wide.
[f. elongata W. et G.S. Wetst ]: Cell body 2 times longer than f. moniliforme, semicells ellipsoidal; 38-42 μm long, 17-22 μm wide.
[f. pandriforme Heimerl ]: Smaller than f. moniliforme; 17.5-20 μm long, 10-15 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977).
Google Image Search
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
37 x 20 μm
Iroha-numa
Zao mountain
Yamagata, 2005
Cosmarium
C. moniliforme
or C. contractum ?
39 x 26 μm
Iroha-numa 2
Zao mountain
Yamagata, 2006
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
μm
Kareki-numa
Nikko
Tochigi, 2008
Cosmarium
C. moniliforme
f. moniliforme
40.5 x 24 μm
Ushidome-ike
Norikura highland
Nagano, 2006
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
40 x 25 μm
Ushidome-ike
Norikura highland
Nagano, 2006
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
34-39 x 19-24 μm
Ushidome-ike
Norikura highland
Nagano, 2005
Cosmarium moniliforme
C. moniliforme
f. elliptica ?
μm
Ushidome-ike
Norikura highland
Nagano, 2007
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
47-52 x 29-31 μm
Kashibaru marsh 5
Karatsu
Saga, 2006
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
μm
Kashibaru marsh 4
Karatsu
Saga, 2008
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
40 x 23 μm
USA, 1999
Cosmarium moniliforme
C. moniliforme
f. moniliforme ?
or f. pandriforme ?
20 x 12 μm
Hiroshima, 1998
Movies
Cosmarium moniliforme
C. moniliforme
f. pandriforme ?
16 x 8 μm
Ishikawa, 2000
Similar species -->> C. contractum (Globuliferae);

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Cosmarium moniliforme
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