Achnanthes coarctata var. otrantina (Rabenhorst) H. Peragallo in Pelletan, 1889 accepted as Achnanthidium otrantinum Rabenhorst, 1853 (new combination reference)
Achnanthes coarctata var. sigmoideum ‘Brébisson' H. Peragallo in Pelletan, 1889 (taxonomy source)
Amphiprora contracta H. Peragallo in Pelletan, 1889 (original description)
Amphiprora vanheurckii (Grunow in Van Heurck) Pelletan, 1889 accepted as Plagiotropis vanheurckii Grunow, 1883 (new combination reference)
Amphitetras antediluviana var. beta cruciformis ‘Smith' H. Peragallo in Pelletan, 1889 (taxonomy source)
Amphitetras antediluviana var. gamma H. Peragallo in Pelletan (original description)
Amphitetras antediluviana var. pentagonalis H. Peragallo in Pelletan, 1889 (original description)
Amphora ovalis var. elliptica Petit in H. Peragallo in Pelletan, 1889 (original description)
Amphora pediculus var. minutissima (W.Smith) H.Peragallo, 1889 accepted as Amphora minutissima W.Smith, 1853 (new combination reference)
Amphora porcellus var. nova caledonica (A. Schmidt) H. Peragallo in Peragallo, 1889 accepted as Amphora nova caledonica Grunow, 1875 (new combination reference)
Amphora spectabilis var. minor H. Peragallo in Pelletan, 1889 (original description)
Berkeleya prostratum H. Peragallo in Pelletan (original description)
Coscinodiscus lineatus var. leptopus Grunow accepted as Coscinodiscus leptopus var. leptopus Grunow in Van Heurck, 1883 (new combination reference)
Craspedodiscus robustus (Greville) Pelletan, 1889 † accepted as Coscinodiscus robustus f. robustus Greville, 1866 (new combination reference)
Cresswellia valida Grunow ex Pelletan, 1889 (original description)
Cyclotella sexpunctata Deby ex Pelletan, 1889 (original description)
Denticula cyprica (Grunow in Van Heurck) Pelletan, 1889 accepted as Denticula elegans var. cyprica Grunow in Van Heurck, 1881 (new combination reference)
Encyonema pediculus (Kützing) H.Peragallo, 1889 accepted as Cymbella pediculus Kützing, 1844 (new combination reference)
Fragilaria capucina var. major H. Peragallo, 1889 (original description)
Fragilaria construens var. tabellaria (Smith) H. Peragallo, 1889 (new combination reference)
Fragilaria harrisonii var. informe H. Peragallo, 1889 (original description)
Fragilaria hyalina var. lata H. Peragallo, 1889 (original description)
Fragilaria parasitica var. oblonga H. Peragallo, 1889 (original description)
Fragilaria virescens var. moniliformis H. Peragallo, 1889 (original description)
Gaillionella crenulata var. valida Pelletan, 1889 (original description)
Gaillonella arenaria (Moore) Pelletan, 1889 accepted as Melosira arenaria var. arenaria Moore ex Ralfs, 1843 (new combination reference)
Gaillonella boreri (Greville) Pelletan, 1889 (new combination reference)
Gaillonella orichalcea (Mertens ex specim. authent. Jurgens) Pelletan, 1889 (new combination reference)
Gaillonella setosa (Greville) Pelletan, 1889 accepted as Melosira setosa var. setosa Greville, 1886 (new combination reference)
Gomphonema cygnus var. longiceps (Ehrenberg) H. Peragallo, 1889 (new combination reference)
Himantidium diodon f. diodon (Ehrenberg; Ehrenberg) Pelletan, 1889 (new combination reference)
Himantidium diodon f. minor (Grunow in Van Heurck) Pelletan, 1889 (new combination reference)
Himantidium pectinale var. elongatum (Van Heurck) Pelletan, 1889 (new combination reference)
Himantidium pectinale var. parvulum Arnott ex H. Peragallo, 1889 (original description)
Himantidium pectinale var. soleirolii (Kützing) Pelletan, 1889 (new combination reference)
Himantidium pectinale var. strictum (Kützing) H. Peragallo, 1889 accepted as Himantidium strictum Kützing (new combination reference)
Himantidium pectinale var. ventricosa (Ehrenberg) H. Peragallo, 1889 accepted as Eunotia ventricosa (Ehrenberg) (new combination reference)
Licmophora gracilis var. beta-minor H. Peragallo, 1889 (original description)
Licmophora tenella (Kützing) H. Peragallo, 1889 (new combination reference)
Navicula bombus var. major H. Peragallo (original description)
Navicula cryptocephala var. parvissima H. Peragallo, 1889 (original description)
Navicula cuspidata var. craticula (Van Heurck) H. Peragallo, 1889 (new combination reference)
Navicula dicephala var. minuta H. Peragallo, 1889 (original description)
Navicula radiosa var. avenacea Brébisson (new combination reference)
Navicula radiosa var. silesiaca (Bleisch) West & West, 1901 (new combination reference)
Nitzschia amphioxys var. elongata (Hantzsch) Mayer, 1913 accepted as Nitzschia elongata var. elongata Hassall, 1845 (new combination reference)
Nitzschia valida f. valida (Cleve & Grunow in Cleve) Pelletan, 1889 accepted as Nitzschia sigma f. valida Grunow, 1878 (new combination reference)
Opephora schwarzii (Grunow) Petit ex Pelletan, 1889 accepted as Fragilaria schwartzii Grunow, 1863 (new combination reference)
Orthoneis maxima (Grunow) H. Peragallo, 1889 accepted as Mastogloia maxima Grunow, 1863 (new combination reference)
Roperia A. Grunow ex J. Pelletan, 1889 (original description)
Roperia tesselata (Roper) Grunow ex Pelletan, 1889 (new combination reference)
Schizonema neglectum var. acuminatum (Brun) H. Peragallo, 1889 accepted as Navicula neglecta var. acuminata Brun, 1880 (new combination reference)
Scoliopleura antillarum (Cleve & Grunow in Cleve) Pelletan, 1889 accepted as Alloioneis antillarum Cleve & Grunow in Cleve, 1878 (new combination reference)
Scoliopleura curvinervia (Grunow in Cleve) Pelletan, 1889 accepted as Navicula curvinervia Grunow in Cleve, 1878 (new combination reference)
Scoliopleura gruendleri (Cleve & Grunow in Cleve) Pelletan, 1889 (new combination reference)
Scoliopleura kurzii (Grunow in Cleve) Pelletan, 1889 accepted as Navicula kurzii Grunow in Cleve, 1878 (new combination reference)
Stauroneis scotica (A. Schmidt) H. Peragallo, 1889 accepted as Navicula scotica A.Schmidt, 1876 (new combination reference)
Staurosira islandica (Grunow in Van Heurck) Pelletan, 1889 accepted as Fragilaria islandica var. islandica Grunow in Van Heurck, 1881 (new combination reference)
Staurosira mutabilis var. intercedens (Grunow) Grunow, 1882 accepted as Fragilaria mutabilis var. intercedens Grunow, 1881 (new combination reference)
Staurosira parasitica (W.Smith) Petit, 1877 accepted as Odontidium parasiticum var. parasiticum W. Smith, 1856 (new combination reference)
Striatella rectangula (Kützing) H. Peragallo, 1889 accepted as Hyalosira rectangula Kützing, 1844 (new combination reference)
Surirella biseriata var. major-subacuminata (Van Heurck) H. Peragallo, 1889 (new combination reference)
Surirella ovata var. marina H. Peragallo, 1889 (original description)
Surirella spiralis f. major Pelletan, 1889 (original description)
Synedra gaillonii var. capensis (Grunow) H. Peragallo, 1889 accepted as Synedra capensis Grunow in Van Heurck, 1881 (new combination reference)
Synedra ulna var. marina (Rabenhorst) H. Peragallo, 1889 (new combination reference)
Toxarium hennedyanum var. hennedyanum (Gregory) Pelletan, 1889 accepted as Synedra hennedyana f. hennedyana Gregory, 1857 (new combination reference)
Tryblionella constricta var. subconstricta (Grunow) H. Peragallo, 1889 accepted as Nitzschia constricta var. subconstricta Grunow in Cleve & Grunow, 1880 (new combination reference)
Tryblionella panduriformis var. delicatula (Grunow in Cleve & Grunow) Pelletan, 1889 accepted as Nitzschia panduriformis var. delicatula Grunow in Cleve & Grunow, 1880 (new combination reference)
Tryblionella panduriformis var. panduriformis (Gregory) Pelletan, 1889 accepted as Nitzschia panduriformis f. panduriformis Gregory, 1857 (new combination reference)
Tryblionella plana (W.Smith) Pelletan, 1889 accepted as Nitzschia plana f. plana W. Smith, 1853 (new combination reference)
Tryblionella punctata var. coarctata (Grunow in Cleve & Möller) Pelletan, 1889 accepted as Nitzschia coarctata var. coarctata Grunow in Cleve & Möller, 1878 (new combination reference)
Tryblionella salinarum (Grunow) Pantocsek, 1901 accepted as Nitzschia tryblionella var. salinarum Grunow in Cleve & Grunow, 1880 (new combination reference)
Vanheurckia vulgaris var. vulgaris (Thwaites) Pelletan, 1889 accepted as Schizonema vulgare var. vulgare Thwaites, 1848 (new combination reference)