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).
Euastrum sinuosum var. parallelum Krieger or
Euastrum sinuosum var. gangense (Turner) Krieger ?,
cell body 62 μm long (estimated), 30 μm wide, L/W=, isthmus μm wide,
x 640, No.2a, a marsh pond at Mitsuishi marsh, Hachimantai city, Iwate Pref., Japan, August 13, 2008 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
No.2, a marsh pond at Mitsuishi marsh, Hachimantai city, Iwate Pref., Japan, August 13, 2008 by Y. Tsukii