Species: Cell body large, 84-105 μm long, 63-74 μm wide, L/W=1.3, isthmus 25-30 μm wide; semicells pyramidal in shape with flattened apex; cellwall covered with large conical projections except the flattened apex; many circular pores present at the center of the semicells (sizes gradually declined from center to margins) (Illustrations of The Japanese Fresh-water Algae, 1977).
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Similar species -- >> C. decoratum;
C. pseudomagnificum
μm
Hanadate S.W.
Yuri-Honjo
Akita, 2008
C. pseudomagnificum
μm
Utsubo-numa
Zao mountain
Yamagata, 2008
C. pseudomagnificum
μm
Numappara marsh
Nasu-shiobara
Tochigi, 2007
C. pseudomagnificum?
76 x 55 μm
Numappara marsh
Kuroiso
Tochigi, 2003
C. pseudomagnificum
80 x 63 μm
Ichinose-enchi
Norikura highland
Nagano, 2006
C. pseudomagnificum
98 x 72 μm
94 x 68 μm
Kabuto-yama
Nishi-no-miya
Hyogo, 2004
C. pseudomagnificum
μm
Kashibaru m.3
Karatsu
Saga, 2008