Achnanthidium catenatum (J.Bílý & Marvan) Lange-Bert. Achnanthidium catenatum (J.Bílý & Marvan) Lange-Bert. in Iconogr. Diatomol. 6: 271. 19991is new combination for Achnanthes catanata J.Bílý & Marvan1. (Basionym:) fig. 8: 1-4