Achnanthes delicatula var. rostrata (Schulz) Cleve-Euler, 1932 accepted as Achnanthes hauckiana var. rostrata Schulz, 1926 (new combination reference)
Achnanthes elliptica var. elliptica (Cleve) Cleve-Euler, 1932 accepted as Achnanthes lanceolata var. elliptica Cleve, 1891 (new combination reference)
Achnanthes lanceolata f. diminuta Cleve-Euler, 1932 (original description)
Achnanthes microcephala f. magna Cleve-Euler, 1932 (original description)
Achnanthes minutissima f. gracillima (Meister) Cleve-Euler, 1932 accepted as Microneis gracillima Meister, 1912 (new combination reference)
Achnanthes minutissima f. inconspicua (Østrup) Cleve-Euler, 1932 accepted as Achnanthes minutissima var. inconspicua Østrup, 1910 (new combination reference)
Achnanthes Schulzii Cleve-Euler, 1932 (original description)
Amphora crucifera Cleve-Euler, 1932 (original description)
Amphora libyca var. vittata Cleve-Euler, 1932 (original description)
Amphora ovalis var. vittata Cleve-Euler, 1932 (original description)
Amphora pusio var. crucifera Cleve-Euler, 1932 (original description)
Amphora thumensis (Mayer) Krieger, 1929 † accepted as Amphora coffeaeformis var. thumensis Mayer, 1919 (new combination reference)
Caloneis bacillaris (Gregory) Cleve (original description)
Caloneis bacillaris f. lacunarum (Grunow) Cleve-Euler, 1932 (new combination reference)
Caloneis bacillaris f. semiinterrupta Cleve-Euler, 1932 (original description)
Caloneis fontinalis (Grunow) Cleve-Euler, 1932 (new combination reference)
Caloneis schilberszkyi var. gibba (Pantocsek) Cleve-Euler, 1932 accepted as Navicula schilberszkyi var. gibba Pantocsek, 1902 (new combination reference)
Caloneis silicula f. diminuta Cleve-Euler, 1932 (original description)
Caloneis silicula f. lata Cleve-Euler, 1932 (original description)
Caloneis silicula var. gibberula (Kützing) Cleve, 1894 accepted as Navicula gibberula var. gibberula Kützing, 1844 (new combination reference)
Caloneis silicula var. ventricosa (Ehrenberg) (Donkin) Cleve, 1894 accepted as Navicula ventricosa var. ventricosa Ehrenberg, 1830 (original description)
Caloneis toussiengii Cleve-Euler, 1932 (original description)
Campylodiscus hibernicus var. sublaevis (Meister) Cleve-Euler, 1932 accepted as Campylodiscus noricus var. sublaevis Meister, 1912 (new combination reference)
Cocconeis pediculus var. baltica (Juhlin-Dannfelt) Cleve-Euler, 1932 accepted as Cocconeis placentula var. baltica Juhlin-Dannfelt, 1882 (new combination reference)
Cyclotella meneghiniana var. rectangulata Cleve-Euler, 1932 (original description)
Cyclotella operculata var. ocellata (Pantocsek) Cleve-Euler, 1932 accepted as Lindavia ocellata (Pantocsek) Nakov et al., 2015 accepted as Pantocsekiella ocellata (Pantocsek, 1901) K.T. Kiss & Ács, 2016 (new combination reference)
Cymatopleura elliptica f. imperfecta Cleve-Euler, 1932 (original description)
Cymatopleura elliptica var. angulata (Greville) Cleve-Euler, 1932 accepted as Cymatopleura angulata Greville, 1862 (new combination reference)
Cymatopleura elliptica var. brunii Cleve-Euler, 1932 (original description)
Cymatopleura solea f. reducta Cleve-Euler, 1932 (original description)
Cymbella amphicephala var. differta Cleve-Euler, 1932 † (original description)
Cymbella amphicephala var. intermedia Cleve-Euler, 1932 (original description)
Cymbella austriaca var. reducta Cleve-Euler, 1932 (original description)
Cymbella austriaca var. subrhomboidea (Østrup) Cleve-Euler, 1932 accepted as Cymbella cymbiformis var. subrhomboidea Østrup, 1910 (new combination reference)
Cymbella austriaca var. ventricosa Cleve-Euler, 1932 (original description)
Cymbella cistula f. minor Cleve-Euler, 1932 (original description)
Cymbella cistula var. crassa (Grunow) Cleve-Euler, 1932 † accepted as Cymbella gastroides var. crassa Grunow, 1882 † accepted as Cymbella crassa (Grunow) Krammer, 2002 † (new combination reference)
Cymbella cymbiformis f. excisa Cleve-Euler, 1932 (original description)
Cymbella cymbiformis var. curvata Cleve-Euler, 1932 (original description)
Cymbella ehrenbergii f. ventricosa Cleve-Euler, 1932 (original description)
Cymbella hauckii Cleve-Euler, 1932 (original description)
Cymbella hungarica var. signata (Pantocsek) Cleve-Euler, 1932 accepted as Cymbella signata Pantocsek, 1902 (new combination reference)
Cymbella incerta var. oblonga (Fontell) Cleve-Euler, 1932 accepted as Cymbella aequalis var. oblonga Fontell, 1917 (new combination reference)
Cymbella lanceolata f. minor Cleve-Euler, 1932 (original description)
Cymbella microcephala var. major (Grunow) Cleve-Euler, 1932 accepted as Cymbella microcephala f. major Grunow, 1880 (new combination reference)
Cymbella nerei var. caldostagnensis (Prudent) Cleve-Euler, 1932 accepted as Cymbella cistula var. caldostagnensis Prudent, 1905 (new combination reference)
Cymbella nerei var. caldostagnensis Cleve-Euler, 1932 (original description)
Cymbella nerei var. inflata (Pantocsek) Cleve-Euler, 1932 accepted as Cymbella cistula var. inflata Pantocsek, 1902 (new combination reference)
Cymbella obtusa var. baltica Cleve-Euler, 1932 (original description)
Cymbella obtusa var. subaequalis (Grunow) Cleve-Euler, 1932 accepted as Cymbella subaequalis Grunow, 1880 (new combination reference)
Cymbella parva var. hungarica (Grunow) Cleve, 1932 accepted as Cocconema hungaricum Grunow, 1875 (new combination reference)
Cymbella sturii f. minor Cleve-Euler, 1932 (original description)
Cymbella suecica A.Cleve, 1930 (original description)
Cymbella turgida var. robusta (Cleve-Euler) Cleve-Euler, 1932 accepted as Cymbella robusta Cleve-Euler in Halden, 1917 (new combination reference)
Cymbella turgida var. valida (Pantocsek) Cleve-Euler, 1932 accepted as Encyonema validum Pantocsek, 1902 (new combination reference)
Cymbella ventricosa f. minor Cleve-Euler, 1932 (original description)
Cymbella ventricosa f. minuta (Hilse in Rabenhorst) Mayer, 1913 accepted as Cymbella minuta Hilse, 1862 (new combination reference)
Cymbella ventricosa var. genuina Cleve-Euler, 1932 (original description)
Cymbella ventricosa var. ovata Grunow accepted as Encyonema caespitosum var. ovata Grunow in Schmidt et al., 1875 (new combination reference)
Diatoma tenue f. abbreviata (Pantocsek) Cleve-Euler, 1932 accepted as Diatoma vulgare f. abbreviata Pantocsek, 1902 accepted as Diatoma vulgaris f. abbreviata Pantocsek (new combination reference)
Diatoma tenue f. reducta Cleve-Euler, 1932 (original description)
Diatoma tenue f. subcapitata (Østrup) Cleve-Euler, 1932 accepted as Diatoma pectinale var. subcapitata Østrup, 1910 (new combination reference)
Diatoma tenue var. heurckii (Pantocsek) Cleve-Euler, 1932 accepted as Diatoma vulgare f. abbreviata Pantocsek, 1902 accepted as Diatoma vulgaris f. abbreviata Pantocsek (new combination reference)
Diatoma tenue var. vanheurckii Cleve-Euler, 1932 (original description)
Diploneis ovalis f. baltica Cleve-Euler, 1932 (original description)
Diploneis ovalis var. validior Cleve-Euler, 1932 (original description)
Epithemia argus var. impressa Cleve-Euler, 1932 (original description)
Epithemia argus var. medioconstricta Cleve-Euler, 1932 (original description)
Epithemia cistula Cleve-Euler, 1932 (original description)
Epithemia cistula var. acuta Cleve-Euler, 1932 (original description)
Epithemia hyndmanii var. meisteri Cleve-Euler, 1932 (original description)
Epithemia sorex var. acuta Cleve-Euler, 1932 (original description)
Epithemia sorex var. undulata Cleve-Euler, 1932 (original description)
Epithemia zebra f. bidens (A. Cleve) Cleve-Euler, 1932 accepted as Epithemia zebra var. bidens A. Cleve, 1895 (new combination reference)
Eunotia lunaris f. bilunaris (Grunow) Cleve-Euler, 1932 accepted as Eunotia lunaris var. bilunaris Mayer, 1918 (new combination reference)
Eunotia lunaris var. hustedtii Cleve-Euler, 1932 (original description)
Eunotia lunaris var. lunaris (Grunow) Cleve-Euler, 1932 (new combination reference)
Eunotia lunaris var. turgidula Cleve-Euler, 1932 (original description)
Eunotia paludosa var. pumila Cleve-Euler, 1932 (original description)
Eunotia pectinalis f. directa Cleve-Euler, 1932 (original description)
Eunotia revoluta Cleve-Euler, 1932 (original description)
Eunotia veneris var. obtusiuscula (Grunow) van Heurck, 1896 accepted as Eunotia incisa var. obtusiuscula Grunow, 1881 (new combination reference)
Fragilaria bidens var. paucistriata Cleve-Euler, 1932 (original description)
Fragilaria brevistriata var. trigibba (Pantocsek) Hustedt, 1930 accepted as Fragilaria trigibba Pantocsek, 1902 (new combination reference)
Fragilaria capucina var. delicatula Cleve-Euler, 1932 (original description)
Fragilaria construens f. cruciata Cleve-Euler, 1932 (original description)
Fragilaria construens f. inaequilatera Cleve-Euler, 1932 (original description)
Fragilaria construens f. subconstricta Cleve-Euler, 1932 (original description)
Fragilaria construens var. asymmetrica (Cleve-Euler) Cleve-Euler, 1932 accepted as Fragilaria mutabilis var. asymmetrica A. Cleve-Euler, 1922 (new combination reference)
Fragilaria construens var. major Cleve-Euler, 1932 (original description)
Fragilaria heidenii var. abbreviata Cleve-Euler, 1932 (original description)
Fragilaria intermedia f. deformis (Grunow) Cleve-Euler (original description)
Fragilaria intermedia var. capitellata (Grunow) Cleve-Euler, 1932 accepted as Fragilaria recapitellata H. Lange-Bertalot & D. Metzeltin, 2009 (new combination reference)
Fragilaria intermedia var. distans (Grunow) Cleve-Euler, 1932 accepted as Synedra vaucheriae var. distans Grunow, 1881 (new combination reference)
Fragilaria rumpens f. familiaris (Kützing) Cleve-Euler, 1932 accepted as Synedra familiaris f. familiaris Kützing, 1844 (new combination reference)
Gomphonema acuminatum f. curta Cleve-Euler, 1932 (original description)
Gomphonema acuminatum f. pantocsekii Cleve-Euler, 1932 (original description)
Gomphonema acuminatum var. directa Cleve-Euler, 1932 (original description)
Gomphonema constrictum var. turgida (Ehrenberg) Cleve-Euler, 1932 accepted as Gomphonema turgidum Ehrenberg, 1854 (new combination reference)
Gomphonema elongatum var. tenuis Cleve-Euler, 1932 (original description)