Hust. 1943
Pinnularia brebissonii, P. microstauron, and P. rhombarea have linear valves. Valves of P. microstauron and P. rhombarea have subrostrate apices.
(Kütz.) Rabenh. 1864
(Ehrenb.) Cleve 1891
Krammer in Metzeltin and Lange-Bert. 1998