Eunotia bilunaris (Ehrenberg) Schaarschmidt, 1880 accepted as
Synedra bilunaris var. bilunaris Ehrenberg, 1832 (new combination reference)
Frustulia viridula (Brébisson) Schaarschmidt, 1881 accepted as
Colletonema viridulum Brébisson ex Kützing, 1849 (new combination reference)
Neidium linearis (Grunow) M.Brun accepted as
Navicula linearis Grunow, 1860 (new combination reference)
Odontidium tenue var. elongatum Lyngbye Schaarschmidt (original description)
Odontidium tenue var. irregulare Schaarschmidt (original description)
Odontidium tenue var. minus (Grunow) Schaarschmidt accepted as
Diatoma tenue var. minus Grunow, 1862 (new combination reference)
Odontidium tenue var. normale (Kützing) Schaarschmidt (original description)
Odontidium vulgare var. ventricosum Schaarschmidt (original description)
Pinnularia appendiculata (C.Agardh) Schaarschmidt, 1881 accepted as
Frustulia appendiculata C.Agardh, 1827 (new combination reference)
Pinnularia parva (Ehrenberg) Schaarschmidt, 1881 accepted as
Stauroptera parva Ehrenberg, 1843 (new combination reference)
Pinnularia sublinearis (Grunow) Schaarschmidt, 1881 accepted as
Navicula sublinearis Grunow, 1885 (new combination reference)
Pinnularia termes var. stauroneiformis (Van Heurck) Schaarschmidt, 1880 accepted as
Navicula termes var. stauroneiformis Grunow in Van Heurck, 1880 (new combination reference)
Podosphenia communis var. cuneata (Lyngbye) Schaarschmidt accepted as
Podosphenia cuneata (Lyngbye) Ehrenberg (new combination reference)
Synedra caroliprincipis Istvanffi (Schaarschmidt), 1881 (original description)
Synedra schaarschmidtii var. alessiana Schaarschmidt (original description)
Synedra schaarschmidtii var. schaarschmidtii Kanitz in Istvanffi (Schaarschmidt), 1881 (original description)
Synedra ulna var. salina (W.Smith) W.Smith accepted as
Synedra salina W. Smith, 1853 accepted as
Ulnaria salina (W. Sm.) Gogorev, 2018 (new combination reference)