|  Genus:  Filament with branching; cell body cylindrical; a single chloroplast plate-like, slightly curved, 
with 1 to several pyrenoids; apical cells pointed or drawn out as hairly projections; 
no difference between axial and branching filaments;  forming a large clump attached on a substrate 
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998). Species:
 |