(Freng.) Lange-Bert. 2003
Craticula acidoclinata has elliptic-lanceolate valves and C. cuspidata has rhombic-lanceolate valves. Valves of C. acidoclinata and C. cuspidata are also smaller and have narrower apices.
Lange-Bert. and Metzeltin 1996
(Kütz.) D.G.Mann 1990