Species [var. intermedium]:
Cell body slightly curved, central region not swelled (inner side slightly concave),
both ends broadly truncated with slanted edges,
76-(200-300)-470 μm long,
14-(17-22)-25 μm wide, L/W=6-15;
cell wall brownish in color, with bands and lined (6-10 lines within 10 μm)
[var. hibernicum]: Cell body straight at central region, 200-(350)-384 μm long, 14-(26) μm wide, L/W=; (Illustrations of The Japanese Fresh-water Algae, 1977). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
