Amphiroa verruculosa Kützing, 1849 accepted as Amphiroa kuetzingiana Trevisan, 1845 (original description)
Ceratoneis gracilis Brébisson ex Kützing, 1849 (original description)
Ceratoneis longissima Brébisson, 1849 (original description)
Chaetomorpha aerea (Dillwyn) Kützing, 1849 (new combination reference)
Cocconema tumidum f. tumidum Brébisson ex Kützing, 1849 (original description)
Cyclotella rotula Kützing, 1844 accepted as Discoplea rotula Ehrenberg, 1844 (new combination reference)
Cymbella amphicephala Näegeli, 1849 (original description)
Encyonema caespitosum Kützing, 1849 (original description)
Gomphonema brebissonii Kützing, 1849 (original description)
Himantidium exiguum Brébisson ex Kützing, 1849 (original description)
Laurencia pyramidalis Bory de Saint-Vincent ex Kützing, 1849 (original description)
Merismopedia elegans A.Braun ex Kützing, 1849 (original description)
Navicula oblongella var. oblongella Naegeli in Kutzing, 1849 (original description)
Navicula tenella var. tenella Brebisson in Kutzing, 1849 (original description)
Odontella rhombus (Ehrenberg) Kützing, 1849 accepted as Zygoceros rhombus Ehrenberg, 1839 (new combination reference)
Spongonema Kützing, 1849 (original description)
Spongonema tomentosum (Hudson) Kützing, 1849 (new combination reference)
Surirella crumena Brébisson ex Kützing, 1849 (original description)
Surirella navicularis Brébisson, 1849 (original description)
Synedra minutissima var. pelliculosa Kützing, 1849 (original description)
Synedra subarcuata Naegeli ex Kützing, 1849 (original description)
Ulothrix speciosa (Carmichael) Kützing, 1849 (new combination reference)