Amphora coffeaeformis var. dusenii (Brun) Cleve-Euler, 1939 accepted as
Amphora dusenii Brun, 1901 (new combination reference)
Caloneis binotata Cleve-Euler, 1939 (original description)
Caloneis fasciata var. subrectangularis Cleve-Euler, 1939 (original description)
Caloneis schilberszkyi f. longa Cleve-Euler, 1939 (original description)
Caloneis schilberszkyi var. biconstricta (Grunow) Cleve-Euler, 1939 accepted as
Navicula trochus var. biconstricta Grunow, 1878 (new combination reference)
Caloneis schultzi Cleve-Euler, 1939 (original description)
Caloneis sejuncta var. baldjikiana (Pantocsek) Cleve-Euler, 1939 accepted as
Navicula sejuncta var. baldjikiana Pantocsek, 1889 (new combination reference)
Cymbella splendens Backman & Cleve-Euler (original description)
Cymbella tumescens Cleve-Euler, 1939 (original description)
Fragilaria bidens var. obsoleta Cleve-Euler, 1939 (original description)
Fragilaria intermedia f. continua Cleve-Euler, 1939 (original description)
Gomphonema acuminatum var. hybrida Cleve-Euler, 1939 (original description)
Melosira lucida Cleve-Euler, 1939 (original description)
Navicula albinensis sensu Cleve-Euler, 1939 (original description)
Navicula amphibola var. asymmetrica (Lagerstedt) Cleve-Euler, 1939 accepted as
Navicula punctata var. asymmetrica Lagerstedt, 1873 (new combination reference)
Navicula arata f. minor Cleve-Euler, 1939 (original description)
Navicula brunii Cleve-Euler, 1939 (original description)
Navicula citrus Cleve-Euler, 1939 (original description)
Navicula cuspidata var. mayeri Cleve-Euler, 1939 (original description)
Navicula decipiens Cleve, 1896 (original description)
Navicula fulva var. modesta Cleve-Euler, 1939 (original description)
Navicula integra var. conspicua Cleve-Euler, 1939 (original description)
Navicula jentzschii var. elongata Cleve-Euler, 1939 (original description)
Navicula kuusamensis Cleve-Euler, 1939 (original description)
Navicula ostrobottnica Cleve-Euler, 1939 (original description)
Navicula rhynchocephala var. grunowii Cleve-Euler, 1939 (original description)
Navicula sandegrenii Cleve-Euler, 1922 (original description)
Neidium dubium var. peisonis (Grunow) Cleve-Euler, 1939 accepted as
Navicula peisonis var. peisonis Grunow, 1860 (new combination reference)
Nitzschia tryblionella var. crassa (Pantocsek) Cleve-Euler, 1939 accepted as
Tryblionella debilis var. crassa Pantocsek, 1902 (new combination reference)