Achnanthes subhudsonis var. kraeuselii (Cholnoky) Cholnoky, 1956 accepted as
Achnanthes kraeuselii var. kraeuselii Cholnoky, 1954 (new combination reference)
Caloneis aequatorialis var. tugelae Cholnoky, 1956 (original description)
Cymbella kappii (Cholnoky) Cholnoky, 1956 accepted as
Cymbella turgidula var. kappii Cholnoky, 1953 (new combination reference)
Cymbella oliffii Cholnoky, 1956 accepted as
Encyonopsis oliffii (Cholnoky) Krammer, 1997 (original description)
Cymbella psammophila Cholnoky, 1956 (original description)
Cymbella subincerta Cholnoky, 1956 (original description)
Diploneis natalensis Cholnoky, 1956 (original description)
Eunotia oliffii Cholnoky, 1956 (original description)
Eunotia pseudoconvexa Cholnoky, 1956 (original description)
Eunotia pseudoflexuosa var. natalensis Cholnoky, 1956 (original description)
Eunotia trigibba var. gracilis Cholnoky, 1956 (original description)
Frustulia tugelae Cholnoky, 1956 (original description)
Mastogloia oliffii Cholnoky, 1956 (original description)
Mastogloia pseudexigua var. pseudexigua Cholnoky, 1956 (original description)
Navicula knysnensis Cholnoky, 1956 (original description)
Navicula mutica var. pseudolagerheimii Cholnoky, 1956 (original description)
Navicula oliffii Cholnoky, 1956 (original description)
Navicula subvitabunda Cholnoky, 1956 (original description)
Navicula tugelae Cholnoky, 1956 (original description)
Nitzschia levidensis var. victoriae (Grunow) Cholnoky, 1956 accepted as
Tryblionella victoriae Grunow, 1862 (new combination reference)
Nitzschia oliffii Cholnoky, 1956 (original description)
Opephora angusta Cholnoky, 1956 (original description)
Pinnularia graciloides var. africana Cholnoky, 1956 (original description)
Pinnularia vastoides Cholnoky, 1956 (original description)
Surirella oliffii Cholnoky, 1956 (original description)