Achnanthidium hauckii (Grunow) Comber, 1901 accepted as
Achnanthes hauckii Grunow in Van Heurck, 1880 (new combination reference)
Achnanthidium lanceolatum var. haynaldii (Schaarschmidt) Comber, 1901 accepted as
Planothidium haynaldii (Schaarschmidt) Lange-Bertalot, 1999 (new combination reference)
Cymbella turgidula var. inaequalis Comber, 1901 (original description)
Epithemia clavata J.L.B. (original description)
Epithemia gibba var. clavata Comber, 1901 (original description)
Epithemia gibba var. ovalis Comber, 1901 (original description)
Eunotia eulensteinii f. biconstricta Comber, 1901 (original description)
Eunotia eulensteinii f. constricta Comber, 1901 (original description)
Eunotia eulensteinii f. eulensteinii Comber, 1901 (original description)
Gomphonema lagenula var. lata Comber, 1901 (original description)
Gomphonema welwitschii Comber, 1901 (original description)
Microneis exigua (Grunow) Comber, 1901 accepted as
Achnanthes exigua var. exigua Grunow in Cleve & Grunow, 1880 (new combination reference)
Nitzschia frustulum var. hantzschiana (Rabenhorst) Comber, 1901 accepted as
Nitzschia hantzschiana f. hantzschiana Rabenhorst, 1860 (new combination reference)
Stauroneis crucicula (Grunow) Cleve, 1894 accepted as
Schizostauron crucicula Grunow, 1881 (new combination reference)
Surirella constricta var. arcta (A. Schmidt) Comber, 1901 accepted as
Surirella arcta var. arcta Schmidt in Schmidt et al., 1875 (new combination reference)