Amphora triundulata Ross, 1947 (original description)
Caloneis silicula var. subundulata (Grunow) Mayer, 1917 accepted as
Navicula ventricosa var. subundulata Grunow, 1880 (new combination reference)
Cymbella angustata var. hybrida (Grunow in Schmidt et al.) Ross, 1947 accepted as
Cymbella aequalis var. hybrida Grunow in Schmidt et al., 1881 (new combination reference)
Cymbella angustata var. linearis (Fontell) R.Ross, 1947 accepted as
Cymbella incerta var. linearis Fontell, 1917 (new combination reference)
Cymbella heteropleura var. typica Ross, 1947 (original description)
Cymbella rabenhorstii R.Ross, 1947 (original description)
Cymbella scotica var. incerta (Grunow) Ross, 1947 accepted as
Cymbella incerta Grunow, 1878 (new combination reference)
Cymbella scotica var. naviculacea (Grunow ex Cleve) R.Ross, 1947 accepted as
Cymbella naviculacea Grunow, 1881 (new combination reference)
Cymbella subaequalis var. oblonga (Fontell) Ross, 1947 accepted as
Cymbella aequalis var. oblonga Fontell, 1917 (new combination reference)
Cymbella ventricosa var. semicircularis (Lagerstedt) Petersen, 1924 accepted as
Cymbella affinis var. semicircularis Lagerstedt, 1873 (new combination reference)
Diploneis oblongella (Nägeli ex Kützing) Cleve-Euler, 1922 accepted as
Navicula oblongella var. oblongella Naegeli in Kutzing, 1849 (new combination reference)
Diploneis oblongella var. ovalis (Hilse) R.Ross, 1947 accepted as
Pinnularia ovalis Hilse, 1860 (new combination reference)
Eunotia fallax var. typica Ross, 1947 (original description)
Eunotia perpusilla var. perminuta (Grunow) R.Ross, 1947 accepted as
Eunotia tridentula var. perminuta Grunow, 1881 (new combination reference)
Fragilaria vaucheriae var. capitellata (Grunow) R.Ross, 1947 accepted as
Fragilaria recapitellata H. Lange-Bertalot & D. Metzeltin, 2009 (new combination reference)
Frustulia rhomboides var. crassinervia (Brébisson ex W.Smith) Ross, 1947 accepted as
Navicula crassinervia var. crassinervia Brébisson in W. Smith, 1853 (new combination reference)
Melosira dendroteres var. dendroteres (Ehrenberg) Ross, 1947 (new combination reference)
Melosira dendroteres var. roeseana (Rabenhorst) R.Ross, 1947 accepted as
Melosira roeseana f. roeseana Rabenhorst, 1854 (new combination reference)
Navicula capitata var. hungarica (Grunow) R.Ross, 1947 accepted as
Navicula hungarica f. hungarica Grunow, 1860 (new combination reference)
Navicula contenta var. typica Ross, 1947 (original description)
Navicula minima var. typica Ross, 1947 (original description)
Navicula variabilis var. capitata Ross, 1947 (original description)
Navicula variabilis var. gomphonemacea (Grunow in Van Heurck) Ross, 1947 accepted as
Navicula gomphonemacea Grunow in Van Heurck, 1880 (new combination reference)
Navicula variabilis var. variabilis Ross, 1947 (original description)
Navicula zellensis var. linearis (Østrup) Ross, 1947 accepted as
Anomoeoneis zellensis var. linearis Østrup, 1910 (new combination reference)
Navicula zellensis var. typica Ross, 1947 (original description)
Neidium affine var. capitatum Molder in Ross, 1947 (original description)
Neidium iridis var. majus (Grunow) Ross, 1947 accepted as
Navicula firma var. major Grunow, 1860 (new combination reference)
Neidium kozlowi var. typicum Ross, 1947 (original description)
Neidium longiceps var. longiceps (Gregory) Ross, 1947 accepted as
Navicula longiceps var. longiceps Gregory, 1856 (new combination reference)
Pinnularia abaujensis (Pantocsek) R.Ross, 1947 (new combination reference)
Pinnularia biceps f. petersenii R.Ross, 1947 (original description)
Pinnularia biceps f. stauroneiformis (Cleve) Ross, 1947 (new combination reference)
Pinnularia cleveana R.R.Ross, 1947 (original description)
Pinnularia divergentissima var. hustedtiana R.Ross, 1947 (original description)
Pinnularia divergentissima var. typica Ross, 1947 (original description)
Pinnularia fasciata var. inconstantissima (Grunow in Van Heurck) Ross, 1947 accepted as
Navicula bacillaris var. inconstantissima Grunow in Van Heurck, 1880 (new combination reference)
Pinnularia fasciata var. inflata (Pantocsek) Ross, 1947 accepted as
Navicula fasciata var. inflata Pantocsek, 1912 (new combination reference)
Pinnularia globiceps var. typica Ross, 1947 (original description)
Pinnularia hudsonensis R.Ross, 1947 (original description)
Pinnularia leptosoma var. typica Ross, 1947 (original description)
Synedra ulna f. recta (Kützing) Ross, 1947 accepted as
Synedra biceps var. recta Kützing, 1844 (new combination reference)