Achnanthes affinis Grunow, 1880 accepted as
Achnanthidium affine (Grunow) Czarnecki, 1994 accepted as
Achnanthes affinis var. affinis Grunow in Cleve & Grunow, 1880 (original description)
Achnanthes biasolettiana Grunow, 1880 accepted as
Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 accepted as
Achnanthes pyrenaica var. pyrenaica Hustedt, 1939 (original description)
Achnanthes hauckii Grunow in Van Heurck, 1880 (original description)
Achnanthes hudsonis Grunow, 1880 (original description)
Achnanthes lanceolata (Brébisson ex Kützing) Grunow, 1880 accepted as
Planothidium lanceolatum (Brébisson ex Kützing) Bukhtiyarova, 1999 (new combination reference)
Achnanthes lanceolata var. dubia sensu van Heurck (original description)
Achnanthes linearis var. jackii (Rabenhorst) Grunow, 1880 accepted as
Achnanthidium jackii Rabenhorst, 1861 (new combination reference)
Achnanthes microcephala (Kützing) Cleve, 1895 accepted as
Achnanthidium microcephalum Kützing, 1844 (new combination reference)
Achnanthes minutissima f. curta Grunow, 1880 (original description)
Achnanthes minutissima var. cryptocephala Grunow, 1880 (original description)
Achnanthes pusilla Grunow in Van Heurck, 1880 (original description)
Achnanthes trinodis var. trinodis (Ralfs in Pritchard) Grunow in Van Heurck, 1880 accepted as
Achnanthidium trinode Ralfs, 1861 (new combination reference)
Actinella brasiliensis var. brasiliensis Grunow in Van Heurck, 1881 (original description)
Actinella guianensis Grunow in Van Heurck, 1881 (original description)
Actinella mirabilis Grunow in Van Heurck, 1881 (original description)
Actinocyclus alienus var. alienus Grunow in Van Heurck, 1883 (original description)
Actinocyclus alienus var. arctica Grunow in Van Heurck, 1883 (original description)
Actinocyclus alienus var. californica Grunow in Van Heurck, 1883 (original description)
Actinocyclus australis Grunow in Van Heurck, 1883 (original description)
Actinocyclus crassus f. crassus (W. Smith) Van Heurck, 1883 accepted as
Eupodiscus crassus W.Smith, 1853 (new combination reference)
Actinocyclus ehrenbergii var. intermedia Grunow in Van Heurck, 1883 (original description)
Actinocyclus ellipticus var. ellipticus Grunow in Van Heurck, 1883 (original description)
Actinocyclus elongatus var. dubia Grunow in Van Heurck, 1883 (original description)
Actinocyclus elongatus var. elongatus Grunow in Van Heurck, 1883 (original description)
Actinocyclus incertus Grunow in Van Heurck, 1883 (original description)
Actinocyclus partitus Grunow in Van Heurck, 1883 (original description)
Actinocyclus ralfsii f. australiensis Grunow in Van Heurck, 1890 (original description)
Actinocyclus ralfsii f. major Grunow in Van Heurck, 1883 (original description)
Actinocyclus ralfsii f. major Van Heurck, 1883 accepted as
Actinocyclus ralfsii f. major Grunow in Van Heurck, 1883 (original description)
Actinocyclus ralfsii f. minor Grunow in Van Heurck, 1883 (original description)
Actinocyclus ralfsii var. monicae Grunow in Van Heurck, 1883 (original description)
Actinocyclus ralfsii var. partitus Grunow in Van Heurck, 1883 (original description)
Actinocyclus ralfsii var. samoensis Grunow in Van Heurck, 1883 (original description)
Actinocyclus roperi (Brébisson) Grunow ex Van Heurck, 1881 accepted as
Eupodiscus roperi Brébisson, 1870 (new combination reference)
Actinocyclus stictodiscus Grunow in Van Heurck, 1883 (original description)
Actinocyclus subtilis f. major [Grunow] in Van Heurck, 1883 (taxonomy source)
Actinocyclus subtilis f. minor [Grunow] in Van Heurck, 1883 (taxonomy source)
Actinocyclus tenuissimus var. australiensis Grunow in Van Heurck, 1883 (original description)
Actinoptychus adriaticus var. balearica Grunow in Van Heurck, 1883 (original description)
Actinoptychus adriaticus var. pumila Grunow in Van Heurck, 1883 (original description)
Actinoptychus annulatus var. annulatus (Wallich) Grunow in Van Heurck, 1883 accepted as
Triceratium annulatum Wallich, 1858 (new combination reference)
Actinoptychus annulatus var. minor Grunow in Van Heurck, 1883 (original description)
Actinoptychus capensis Grunow in Van Heurck, 1883 (original description)
Actinoptychus glabratus f. glabratus Grunow in Van Heurck, 1883 (original description)
Actinoptychus glabratus var. angelorum Grunow in Van Heurck, 1883 (original description)
Actinoptychus glabratus var. incisa Grunow in Van Heurck, 1883 (original description)
Actinoptychus glabratus var. montereyi Grunow in Van Heurck, 1883 (original description)
Actinoptychus heliopelta f. heliopelta Grunow in Van Heurck, 1883 (original description)
Actinoptychus hispidus Grunow in Van Heurck, 1883 (original description)
Actinoptychus irregularis Grunow in Van Heurck, 1883 (original description)
Actinoptychus janischii var. janischii Grunow in Van Heurck, 1883 (original description)
Actinoptychus laevigatus f. laevigatus Grunow in Van Heurck, 1883 (original description)
Actinoptychus pellucidus Grunow in Van Heurck, 1883 (original description)
Actinoptychus radiolatus Grunow in Van Heurck, 1883 (original description)
Actinoptychus spiniferus Grunow in Van Heurck, 1883 (original description)
Actinoptychus splendens var. californica Grunow in Van Heurck, 1883 (original description)
Actinoptychus splendens var. crucifera Grunow in Van Heurck, 1883 (original description)
Actinoptychus splendens var. glabratus Grunow in Van Heurck, 1883 (original description)
Actinoptychus splendens var. halionyx (Grunow) Grunow in Van Heurck, 1883 accepted as
Actinoptychus halionyx var. halionyx Grunow, 1867 (new combination reference)
Actinoptychus splendens var. nicobarica Grunow in Van Heurck, 1883 (original description)
Actinoptychus undulatus f. microsticta Grunow in Van Heurck, 1883 (original description)
Actinoptychus undulatus f. sexappendiculata Grunow in Van Heurck, 1883 (original description)
Actinoptychus vulgaris var. australis Grunow in Van Heurck, 1883 (original description)
Actinoptychus vulgaris var. monicae Grunow in Van Heurck, 1883 (original description)
Actinoptychus vulgaris var. spiniferus Grunow in Van Heurck, 1883 (original description)
Actinoptychus vulgaris var. virginica Grunow in Van Heurck, 1883 (original description)
Amphiprora decussata Grunow, 1877 (original description)
Amphiprora hyalina Eulenstein ex Van Heurck, 1880 (original description)
Amphiprora mediterranea Grunow in Van Heurck, 1880 (original description)
Amphitropis alata (Ehrenberg) Rabenhorst, 1868 accepted as
Entomoneis alata (Ehrenberg) Ehrenberg, 1845 (new combination reference)
Amphitropis conspicua (Greville) Grunow, 1883 accepted as
Amphiprora conspicua Greville, 1861 (new combination reference)
Amphitropis decussata Grunow in Van Heurck, 1880 (original description)
Amphitropis duplex (Donkin) Rabenhorst, 1868 accepted as
Amphiprora duplex var. duplex Donkin, 1858 (new combination reference)
Amphitropis hyalina ‘Eulenstein manuscript' Grunow in Van Heurck, 1880 (taxonomy source)
Amphitropis ornata (Bailey) Grunow, 1883 accepted as
Entomoneis ornata (Bailey) Reimer, 1975 (new combination reference)
Amphitropis pulchra (Bailey) Grunow, 1883 accepted as
Entomoneis pulchra (Bailey) Reimer, 1975 (new combination reference)
Amphora affinis f. minor Grunow in Van Heurck, 1880 (original description)
Amphora angulosa var. hybrida Grunow, 1880 (original description)
Amphora commutata var. commutata Grunow in Van Heurck, 1880 (original description)
Amphora decipiens Grunow in Van Heurck, 1883 (original description)
Amphora globulosa var. perpusilla Grunow, 1880 (original description)
Amphora gracilis f. parva Van Heurck, 1880 (original description)
Amphora marina var. marina ‘W. Smith' sensu Van Heurck, 1880 (taxonomy source)
Amphora ocellata f. minor Van Heurck, 1880 (original description)
Amphora pediculus var. exilis Grunow in Van Heurck, 1880 (original description)
Amphora pediculus var. major Van Heurck (original description)
Amphora pediculus var. minor Grunow in Van Heurck, 1880 (original description)
Amphora recta Grunow in Van Heurck, 1883 accepted as
Amphiprora recta Gregory, 1857 (new combination reference)
Amphora recta Grunow in Van Heurck, 1883 accepted as
Amphiprora recta Gregory, 1857 (original description)
Amphora salina f. minor Van Heurck, 1880 (original description)
Amphoropsis decipiens Grunow, 1881 (original description)
Amphoropsis recta var. recta (Gregory) Grunow in Van Heurck, 1883 accepted as
Amphiprora recta Gregory, 1857 (new combination reference)
Anaulus birostratus f. angustior Grunow in Van Heurck, 1882 (original description)
Anaulus birostratus f. birostratus (Grunow) Grunow in Van Heurck, 1882 accepted as
Biddulphia birostrata Grunow, 1863 (new combination reference)
Anaulus mediterraneus var. intermedia Grunow in Van Heurck, 1882 (original description)
Anaulus mediterraneus var. mediterraneus Grunow in Van Heurck, 1882 (original description)
Anaulus minutus Grunow, 1882 (original description)
Ardissonea crystallina var. smithii Grunow in Van Heurck, 1881 (original description)
Asterionella formosa var. gracillima (Hanztsch) Grunow, 1881 accepted as
Diatoma gracillimum Hantzsch in Rabenhorst, 1861 (new combination reference)
Asterionella formosa var. inflata Grunow in Van Heurck, 1881 accepted as
Asterionella inflata Heib., 1863 (original description)