Species:
Cell body large, elongated, slightly curved, both side nearly straight at central region,
300-(448-672)-768 μm long, 13-(20-48) μm wide,
L/W=14-16; cell wall brownish, finely striated (about 12 lines within 10 μm);
9-11 pyrenoids in each semicells (Illustrations of The Japanese Fresh-water Algae, 1977).
Closterium lineatum Ehrenberg var. lineatum ? (or C. intermedium ?),
cell body 293 μm long, 12 μm wide, L/W=24.4,
x 400, x 640, Lake Tanuki, Fujinomiya city, Shizuoka Pref., Japan, April 29, 2006 by Y. Tsukii 50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
Lake Tanuki, Fujinomiya city, Shizuoka Pref., Japan, April 29, 2006 by Y. Tsukii