Genus: Greater part of axopodia and cell body covered by a thick gelatinous mantle (Kudo, 1966).
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S. fockei
cell μm
Japan, 1997
S. fockei
cell μm
Japan, 1997
S. fockei
or Raphidiophrys ?
cytoplasm exchange
Kuroiso
Tochigi, 1998
S. fockei
or Raphidiophrys ?
cytoplasm connected
Naruto
Chiba, 2003
Sphaerastrum sp.
cell μm
Japan, 1998
Sphaerastrum sp.
cell μm
Japan, 1998
Sphaerastrum sp.
cell μm
Japan, 1997
Sphaerastrum sp.
cell μm
Japan, 1998
Sphaerastrum sp. ?
cell μm
Kaga
Ishikawa, 2000
Sphaerastrum sp. ?
cell μm
Kashiwa
Chiba, 2002
Sphaerastrum sp.
21 μm φ
Numa-no-hara m.
Madarao highland
Niigata, 2005
Sphaerastrum sp.
20 μm φ
Nagaike park
Hachioji
Tokyo, 2005
Sphaerastrum sp.
20 μm φ
Watarase-yusuichi
Fujioka
Tochigi, 2005
Sphaerastrum sp.
30 μm φ
Akebono marsh
Tsuchiyu-onsen
Fukushima, 2005
Sphaerastrum sp.
30 μm φ
Junichogata
Himi
Toyama, 2006
S. fockei
or Raphidiophrys ?
cell 25 μm
Akebono marsh
Tsuchiyu-onsen
Fukushima, 2005
S. fockei
or Raphidiophrys ?
cell 23-30 μm
Shimo-no-koike
Shiga highland
Nagano, 2004
S. fockei
or Raphidiophrys ?
cell 29-31 μm
Onnenai
Kushiro marsh
Hokkaido, 2005
S. fockei
or Raphidiophrys ?
cell 25 μm
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
S. fockei
or Raphidiophrys ?
cell μm
Fujimitashiro
Katashina
Gunma, 2007
S. fockei
or Raphidiophrys ?
cell μm
near Omine Mt.
Minakami
Gunma, 2007
S. fockei
or Raphidiophrys ?
cell μm
Igashira p.
Mooka
Tochigi, 2008
S. fockei
or Raphidiophrys ?
cell μm
Miyatoko m.5
Minami-Aizu
Fukushima, 2008
Sphaerastrum sp.
or Raphidiophrys ?
21 μm φ
Ichinose-enchi
Norikura highland
Nagano, 2005
Sphaerastrum sp.
or Raphidiophrys ?
28 μm φ
Suiren-numa
Hakkoda mountain
Aomori, 2005Similar Genus -->> Raphidiophrys