Genus: Cell body crescent in shape (long, curved, tapered at both ends); cross section rounded; cell wall smooth or with longitudinal lines, bands on the cell wall in some species; chloroplast laminae ridged and radially arranged, which makes cross section star-shaped; pyrenoids aligned or scattered (Illustrations of The Japanese Fresh-water Algae, 1977).
T=terminal; Tv=terminal vacuole
C. ehrenbergii |
C. ehrenbergii ? |
C. moniliferum |
|
C. acerosum 550 x 48 μm |
C. acerosum ? μm |
||
C. aciculare ? 673 x 19 μm |
Closterium sp. 292 x 14 μm |
C. gracile x 640 |
Closterium sp. gracile ? |
C. lanceolatum |
C. lanceolatum ? |
C. kuetzingii 383 x 16 μm |
C. kuetzingii 300 x 16 μm |