Species: Trichome pale blue-green in color, straight or slightly twisted, without constriction at cell-cell junction, 2-2.5 μm wide; gradually tapering at curving terminal; cell body 2-3 times longer than its width (4-6 μm long); sometimes containing granules along septum (Illustrations of The Japanese Fresh-water Algae, 1977).

31 μm 63 μm 94 μm; x 640