|  Subgenus: Entomum (Apical area deeply indented or notched) Section: Incisa (Cell surface smooth; apical area without spiny projections)
 Species: 
Cell body 60-74 μm long, 34-46 μm wide, isthmus 8-15 μm wide, 
(Illustrations of the Fresh-water Algae, 1977).
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