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).
Species: Cell body slightly curved, inner-side nearly straight; L/W= 6-8;
cell wall smooth, transparent; chloroplasts with 5-10 laminae; 6-8 pyrenoids in each semi-cell;
200- (240-400) -540 μm long,
28- (30-52) -79 μm wide
(Illustrations of The Japanese Fresh-water Algae, 1977).
|