Achnanthes biasolettiana Grunow, 1880 accepted as Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 accepted as Achnanthes pyrenaica var. pyrenaica Hustedt, 1939 (original description)
Actinocyclus australis Grunow in Van Heurck, 1883 (original description)
Actinocyclus stictodiscus Grunow in Van Heurck, 1883 (original description)
Actinoptychus vulgaris var. australis Grunow in Van Heurck, 1883 (original description)
Amphiprora hyalina Eulenstein ex Van Heurck, 1880 (original description)
Asterionella notata Grunow ex Van Heurck, 1881 accepted as Asterionella bleakeleyi var. notata Grunow, 1867 (new combination reference)
Biddulphia heteroceros Grunow in Van Heurck, 1882 (original description)
Biddulphia rhombus var. trigona Cleve ex Van Heurck, 1882 (original description)
Chaetoceros anglicus Grunow in Van Heurck, 1882 (original description)
Chaetoceros eibenii Grunow, 1882 (original description)
Cocconeis dirupta var. flexella (Janisch & Rabenhorst) Grunow, 1880 accepted as Cocconeis flexella Janisch & Rabenhorst, 1863 (new combination reference)
Cocconeis scutellum f. parva Grunow, 1880 (original description)
Cocconeis scutellum var. minutissima Grunow, 1880 (original description)
Cyclotella comta var. oligactis (Ehrenberg) Grunow in Van Heurck, 1882 accepted as Discoplea oligactis Ehrenberg, 1854 (new combination reference)
Cyclotella striata var. baltica Grunow in Van Heurck, 1882 (original description)
Cymbella tumida (Brébisson) van Heurck, 1880 accepted as Cocconema tumidum f. tumidum Brébisson ex Kützing, 1849 (new combination reference)
Ditylum brightwellii (T.West) Grunow, 1885 (new combination reference)
Ditylum sol (Grunow) De Toni, 1894 (original description)
Eucampia cornuta (Cleve) Grunow, 1883 accepted as Moelleria cornuta Cleve, 1873 accepted as Neomoelleria cornuta (Cleve) S.Blanco & C.E.Wetzel, 2016 (new combination reference)
Eunotogramma debile Grunow in Van Heurck, 1883 (original description)
Eunotogramma frauenfeldii (Grunow) Grunow in Van Heurck, 1883 accepted as Euodia frauenfeldii Grunow, 1863 (new combination reference)
Euodia weissflogii Grunow in Van Heurck, 1883 (original description)
Grammatophora undulata var. japonica Grunow, 1880 (original description)
Licmophora californica Grunow, 1885 (original description)
Mastogloia elliptica (C.Agardh) Cleve, 1893 (new combination reference)
Navicula minuscula var. bahusiensis Grunow, 1880 (original description)
Navicula minuscula var. minuscula Grunow, 1880 (original description)
Navicula perminuta Grunow, 1880 (original description)
Navicula slesvicensis Grunow, 1880 (original description)
Navicula ventricosa var. truncatula Grunow, 1880 (original description)
Nitzschia brevissima Grunow, 1880 accepted as Nitzschia obtusa var. brevissima Van Heurck, 1885 (original description)
Nitzschia elegantula Grunow, 1881 (original description)
Nitzschia obtusa var. scalpelliformis (Grunow) Grunow, 1881 accepted as Nitzschia scalpelliformis Grunow, 1880 (new combination reference)
Nitzschia paleacea Grunow in Van Heurck, 1881 (original description)
Nitzschia sigma var. rigida Grunow ex Van Heurck, 1880 (original description)
Nitzschia spathulata var. hyalina (Gregory) Grunow, 1881 accepted as Nitzschia hyalina Gregory, 1857 (new combination reference)
Nitzschia vidovichii Grunow accepted as Homoeocladia vidovichii var. vidovichii Grunow, 1862 (new combination reference)
Plagiogramma vanheurckii Grunow, 1881 (original description)
Pseudo-eunotia A. Grunow in H. Van Heurck, 1881 (original description)
Rhizosolenia alata f. gracillima (Cleve) Gran, 1908 accepted as Rhizosolenia gracillima Cleve, 1881 (new combination reference)
Stephanodiscus astraea var. minutula (Kützing) Grunow, 1882 accepted as Cyclotella minutula Kützing, 1844 † (new combination reference)
Synedra affinis var. acuminata Grunow, 1881 (original description)
Thalassiothrix elongata Grunow, 1880 represented as Lioloma elongatum (Grunow) Hasle, 1997 (original description)