|  Genus: Unicellular, solitary or gregarious; cells flask-shaped composed of globose basal portion and 
a narrow cylindrical gelatinous sheath, with a long fine seta extending from the cell through 
the sheath (Photomicrog. Fresh-w. Alg. 4, 1985). Species: 
Cells 10-20 μm in diameter at the base 
(Photomicrog. Fresh-w. Alg. 4, 1985).
 |