Species [ var. tenuis Agardh ]: Trichome straight, bluegreen, slightly curved at terminal,
2.5-5 μm long, 4-10 μm wide, L/W=1/3 (0.3);
septum slightly constricted, granules present along septum; apical cells semispherical, its wall sometimes thickened.
[ var. asiatica Wille ]: 4.5-6 μm long, 10-12 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
