Species: Trichome straight, not attenuated toward ends, 1-2 μm long, 5-6 μm wide,
L/W=1/4-1/3 (0.25-0.33); septum not constricted, granules present along septum;
terminal cells broadly rounded; cytoplasm bluegreen or light blue, containing minute granules
(Illustrations of The Japanese Fresh-water Algae, 1977).
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31 μm
63 μm
94 μm; x 640
