Species [var. vestitum]: Cell body 24-25 μm long, 39-47.6 μm wide (including arms), isthmus 7.7-10 μm wide; 2 dichotomous projections at each side.
[var. splendidum Grünblad]: Cell body 21 μm long, 38 μm wide (including arms), isthmus 9 μm wide; 4 short dichotomous projections at each side.
(Illustrations of The Japanese Fresh-water Algae, 1977)
Google Image Search
S vestitum
v. splendidum
37 x 57 μm
Dojo-ike
Norikura highland
Nagano, 2006
S vestitum
v. splendidum
42 x 60 μm
Azami-ike
Norikura highland
Nagano, 2006
S vestitum
v. vestitum
x 40 μm
Kashibaru marsh
Karatsus
Saga, 2008
S vestitum
v. splendidum
x 35 μm
Nabekura highland
Iiyama
Nagano, 2008