Family:
Genus: Unicellular, solitary or gregarious; cells flask-shaped composed of globose basal portion and a narrow cylindrical gelatinous sheath, with a long fine seta extending from the cell through the sheath (Photomicrograph of Japanese freshwater algae, 4, 1985).
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C. globosum
cell μm φ
seta μm
Japan, 1997
C. globosum
cell 13 μm φ
seta 140 μm
Takao Sakura p.
Kitamoto
Saitama, 2005
C. globosum
cell 11 μm φ
seta 120 μm
Univ. A.V.M.
Obihiro
Hokkaido, 2005