Family:
Genus (Diesing): Cells obovate or almost spherical, flattened dorsoventrally; rod-shaped trichocysts around cell periphery or concentrated at the 2 ends of the cell; flagella usually same length as cell; but trailing flagellum may reach twice that length; many chloroplasts in a single layer in the cell periphery (Illustrated Guide, 1985). (Illustrations of The Japanese Fresh-water Algae, 1977).

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G. depressa cell 39 x 31 μm Saitama, 2000 Movies	G. depressa ? cell 31 x 27 μm Koshigaya Saitama, 2001	G. depressa ? cell 28 x 25 μm Tsuchiura Ibaraki, 2002	G. depressa cell 33 x 31 μm Sannoh park Nishi-ku Saitama, 2004
G. depressa cell μm near Town Hall Shobu Saitama, 2004	G. depressa 38 x 36 μm Noda Namegawa Saitama, 2004	G. depressa 35 x 30 μm Hasu-ike Mizumoto Park Tokyo, 2006
G semen ? or Vacuolaria ? 37 x 29 μm Kasuga Fukuoka, 2001
G semen or Merotrichia ? 49 x 27 μm Kannon-numa Shimogo Fukushima, 2005	G semen or Merotrichia ? 52 x 30 μm Ochiai-numa Noshiro Akita, 2007

Similar genus ->> Vacuolaria;

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