Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species [var. dideltoides ]:
Cell body 56-90 μm long, 31-50 μm wide, isthmus 7-14 μm wide,
(Illustrations of the Fresh-water Algae, 1977).
Euastrum sinuosum var. reductum W. et G.S. West or
Euastrum sinuosum var. perforatum Krieger ?,
cell body 66 μm long (estimated), 42 μm wide, L/W=, isthmus μm wide,
x 640, No.2c, 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