Family: Unicells or colonies of non-fixed number of cells; cell body variable in shape; one or more chloroplasts variable in shape; asexual reproduction by autospore or autocoenobium (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Unicellular, planktonic; cell body large, spherical in shape; many chloroplasts disc- or lens-shaped, with a pyrenoid, parietal or radially arranged from the center (Guide book to the "Photomicrographs of the Freshwater Algae", 1998). 100-200 μm in diam. (Illustrations of The Japanese Fresh-water Algae, 1977).
E. viridis
cell μm
in preparation
Numappara
Tochigi, 2003
Eremosphaera sp.
or Neospongiococcum ?
cell 58 μm
Japan, 1998
Eremosphaera sp.
or Neospongiococcum ?
cell 36 μm
Ujiie (Sakura)
Tochigi, 2001
Eremosphaera sp.
or Neospongiococcum ?
st. Tgu-1, axenic
cell 9-58 μm
Ujiie (Sakura)
Tochigi, 2001
Eremosphaera sp.
or Neospongiococcum ?
cell μm
Matsubushi
Saitama, 2003
