Achnanthes clevei f. balcanica Hustedt, 1945 (original description)
Achnanthes clevei f. rostrata Hustedt, 1945 (original description)
Achnanthes fonticola Hustedt, 1945 (original description)
Achnanthes jakovljevici Hustedt, 1945 (original description)
Achnanthes minuscula Hustedt, 1945 (original description)
Achnanthes plitvicensis Hustedt, 1945 (original description)
Achnanthes procera Hustedt, 1945 (original description)
Achnanthes semiaperta Hustedt, 1945 (original description)
Caloneis macedonica Hustedt, 1945 (original description)
Caloneis silicula f. claviceps Hustedt, 1945 (original description)
Cocconeis semiaperta Hustedt, 1945 (original description)
Cyclotella plitvicensis Hustedt, 1945 (original description)
Cyclotella stelligeroides Hustedt, 1945 (original description)
Cymbella hybridiformis Hustedt, 1945 (original description)
Cymbella thumensis (Mayer) Hustedt, 1945 † accepted as
Amphora coffeaeformis var. thumensis Mayer, 1919 (new combination reference)
Diploneis modica Hustedt, 1945 (original description)
Gomphonema curtum Hustedt, 1945 (original description)
Gomphonema irroratum Hustedt, 1945 (original description)
Gomphonema macedonicum Hustedt, 1945 (original description)
Gomphonema olivaceum var. fonticola Hustedt, 1945 (original description)
Navicula arvensoides Hustedt, 1945 (original description)
Navicula bacilloides Hustedt, 1945 (original description)
Navicula balcanica Hustedt in Schmidt et al., 1934 accepted as
Placoneis balcanica (Hustedt) H. Lange-Bertalot, D. Metzeltin & Levkov in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (original description)
Navicula brockmanni var. enucleata Hustedt, 1945 (original description)
Navicula carniolensis Hustedt, 1945 (original description)
Navicula certa Hustedt, 1945 (original description)
Navicula demissa Hustedt, 1945 (original description)
Navicula enucleata Hustedt, 1945 (original description)
Navicula exiguiformis Hustedt, 1944 accepted as
Witkowskia exiguiformis (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024 (original description)
Navicula frustulum Hustedt, 1945 (original description)
Navicula graciloides f. minutissima Hustedt, 1945 (original description)
Navicula inclinata Hustedt, 1945 (original description)
Navicula jakovljevici Hustedt, 1945 (original description)
Navicula menisculus f. minutissima Hustedt, 1945 (original description)
Navicula mitis Hustedt, 1945 (original description)
Navicula modica Hustedt, 1945 (original description)
Navicula mollicula Hustedt, 1945 (original description)
Navicula monoculata Hustedt, 1945 (original description)
Navicula mutica var. gibbula Hustedt, 1945 (original description)
Navicula obsita Hustedt, 1945 accepted as
Pulchellophycus obsitus (Hustedt) Edlund & M.J.Wynne, 2019 (original description)
Navicula obsoleta Hustedt, 1942 (original description)
Navicula ochridana Hustedt, 1945 (original description)
Navicula omissa Hustedt, 1945 (original description)
Navicula oppugnata Hustedt, 1945 (original description)
Navicula permitis Hustedt, 1945 (original description)
Navicula placentula var. maculata Hustedt, 1945 (original description)
Navicula plitvicensis Hustedt, 1945 (original description)
Navicula praeterita Hustedt, 1945 (original description)
Navicula rotunda Hustedt, 1945 (original description)
Navicula stankovici Hustedt, 1945 (original description)
Navicula subgastriformis Hustedt, 1945 (original description)
Navicula submitis Hustedt, 1945 (original description)
Navicula submuralis Hustedt, 1945 (original description)
Navicula subprocera Hustedt, 1945 (original description)
Navicula subrotundata f. subrotundata Hustedt, 1945 (original description)
Navicula subsalina f. major Van Heurck, 1880 (original description)
Navicula ventraloides Hustedt, 1945 (original description)
Neidium binode (Ehrenberg) Hustedt, 1945 accepted as
Neidiomorpha binodis (Ehrenberg) M.Cantonati, Lange-Bertalot & N.Angeli, 2010 (new combination reference)
Nitzschia balcanica Hustedt, 1945 (original description)
Nitzschia jucunda Hustedt, 1945 (original description)
Nitzschia macedonica Hustedt, 1945 (original description)
Nitzschia speciosa Hustedt, 1945 (original description)
Stauroneis palustris var. palustris Hustedt, 1945 (original description)
Stauroneis smithii var. elliptica Hustedt, 1945 (original description)