Alloeoneis Pantocsek, 1889 accepted as Scoliopleura Grunow, 1860 (status source)
Alloeoneis Pantocsek, 1889 accepted as Scoliopleura Grunow, 1860 (basis of record)
Amblyophis srinagari Bhatia, 1930 accepted as Euglena srinagari (Bhatia) Huber-Pestalozzi, 1955 (habitat flag source)
Ammonidium listeri M. Smelror, 1987 † (extant flag source)
Amphorochara L.K. Krasavina, 1978 † (extant flag source)
Ankistrodesmopsis F. Lederer & J. Lukavský, 1998 (habitat flag source)
Apistonema aestuarii Magne (habitat flag source)
Apistonema carterae Anand (habitat flag source)
Appeninocodium O. Dragastan, 1985 † accepted as Appeninocodium O. Dragastan ex E.A. Molinari-Novoa & M.D. Guiry, 2021 † (name verified source)
Appeninocodium O. Dragastan, 1985 † accepted as Appeninocodium O. Dragastan ex E.A. Molinari-Novoa & M.D. Guiry, 2021 † (extant flag source)
Buetschlia triciliata T.-S. Hsiung, 1932 accepted as Hsiungia triciliata (T.-S. Hsiung) S. Imai (source of synonymy)
Caucasuella gulistanica N.P. Kyansep-Romashkina, 1980 † accepted as Aclistochara gulistanica (Kyansep-Romashkina) M. Feist & N. Grambast-Fessard, 1991 † (source of synonymy)
Chledripole Rafinesque, 1810 (habitat flag source)
Chledripole Rafinesque, 1810 (extant flag source)
Chrysoderma C. Billard, 1984 (name verified source)
Chrysoderma C. Billard, 1984 (basis of record)
Colonnella kajrahatensis R.C. Misra, S.N. Singh & S. Kumar † (extant flag source)
Comperiella K. Sabbe & W. Vyverman, 2001 (basis of record)
Comperiella K. Sabbe & W. Vyverman, 2001 (name verified source)
Croasdalea C.E.M. Bicudo & C.T.J. Mercante, 1993 (basis of record)
Croasdalea C.E.M. Bicudo & C.T.J. Mercante, 1993 (name verified source)
Diatomaceae accepted as Bacillariophyta (additional source)
Draparnaldiana (source of synonymy)
Draparnaldiana ciliata (Ellis) Grateloup, 1828 accepted as Boryna ciliata (Ellis) Grateloup ex Bory de Saint-Vincent (source of synonymy)
Druggidium D. Habib, 1973 † (habitat flag source)
Embryocola Michajłow, 1969 (habitat flag source)
Embryocola ocelli Michajlow, 1969 (habitat flag source)
Endosperma C.S. Rafinesque, 1810 (habitat flag source)
Endosperma C.S. Rafinesque, 1810 (extant flag source)
Eolimna H. Lange-Bertalot & W. Schiller in Schiller & Lange-Bertalot, 1997 accepted as Eolimna Lange-Bertalot & W.Schiller, 2024 † (name verified source)
Epibolium dermaticola Printz, 1915 (habitat flag source)
Fischerites † accepted as Receptaculites Deshayes in Bory de St.-Vincent, 1828 † (source of synonymy)
Fischerites † accepted as Receptaculites Deshayes in Bory de St.-Vincent, 1828 † (basis of record)
Fischerites coreanicus S. Niko & N. Ikebe † accepted as Receptaculites coreanicus N. Ikebe † (source of synonymy)
Fisherites Finney & Nitecki, 1979 † accepted as Receptaculites Deshayes in Bory de St.-Vincent, 1828 † (basis of record)
Fisherites Finney & Nitecki, 1979 † accepted as Receptaculites Deshayes in Bory de St.-Vincent, 1828 † (source of synonymy)
Friedmannia Chantanachat & Bold, 1962 accepted as Myrmecia Printz, 1920 (habitat flag source)
Fülöpia E. Nagy, 1965 † accepted as Fueloepia E. Nagy, 1965 † (basis of record)
Galdieria daedala O. Yu. Sentsova accepted as Cyanidium daedalum (O. Yu. Sentsova) F.D. Ott (source of synonymy)
Glaucosphaera Korshikov, 1930 (habitat flag source)
Hadubrandia F. Schmitz, 1897 (habitat flag source)
Hadubrandia F. Schmitz, 1897 (basis of record)
Hadubrandia F. Schmitz, 1897 (name verified source)
Haemmerlenia Trevisan, 1848 (source of synonymy)
Haemmerlenia fucicola (Meneghini) Trevisan accepted as Percursaria fucicola Meneghini (source of synonymy)
Haemmerlenia rigens (Zanardini) Trevisan accepted as Percursaria rigens Zanardini (source of synonymy)
Halysiphonia Trevisan, 1845 accepted as Capsosiphon Gobi, 1879 (status source)
Halysiphonia aureola (C. Agardh) Trevisan accepted as Capsosiphon fulvescens (C. Agardh) Setchell & N.L. Gardner, 1920 (source of synonymy)
Halysiphonia fulvescens (C. Agardh) Trevisan accepted as Capsosiphon fulvescens (C. Agardh) Setchell & N.L. Gardner, 1920 (source of synonymy)
Haplocladium Nägeli, 1862 accepted as Pterothamnion Nägeli, 1855 (source of synonymy)
Helmyton Rafinesque, 1810 (extant flag source)
Helmyton Rafinesque, 1810 (habitat flag source)
Hololaminotus J. Lecal, 1967 (name verified source)
Hololaminotus J. Lecal, 1967 (habitat flag source)
Hormococcus R. Chodat, 1902 accepted as Klebsormidium P.C. Silva, K. Mattox & W. Blackwell, 1972 (name verified source)
Hormococcus R. Chodat, 1902 accepted as Klebsormidium P.C. Silva, K. Mattox & W. Blackwell, 1972 (basis of record)
Hornichara V.P. Maslov, 1963 † (extant flag source)
Hyalocharacium A. Pascher, 1929 accepted as Characium A. Braun in F.T. Kützing, 1849 (basis of record)
Hyalocharacium A. Pascher, 1929 accepted as Characium A. Braun in F.T. Kützing, 1849 (status source)
Hyalocharacium A. Pascher, 1929 accepted as Characium A. Braun in F.T. Kützing, 1849 (extant flag source)
Hyalocharacium A. Pascher, 1929 accepted as Characium A. Braun in F.T. Kützing, 1849 (name verified source)
Hyalocharacium A. Pascher, 1929 accepted as Characium A. Braun in F.T. Kützing, 1849 (source of synonymy)
Isophlis Rafinesque, 1810 (habitat flag source)
Isophlis Rafinesque, 1810 (extant flag source)
Latochara K. Mädler, 1955 † (extant flag source)
Leptorima Rafinesque, 1810 (habitat flag source)
Leptorima Rafinesque, 1810 (extant flag source)
Meretrosulus petrolia (Hanna) Hanna † accepted as Biddulphia petrolia Hanna (source of synonymy)
Multispirochara Y.C. Hao in Y.C. Hao et al., 1983 † (extant flag source)
Neochara Z. Wang, 1978 † (extant flag source)
Neonaviculopsis S. Locker & E. Martini, 1986 † (extant flag source)
Obrachevella † accepted as Obruchevella E.A. Reitlinger, 1948 † (extant flag source)
Oltmannsiellopsidaceae T. Nakayama, S. Watanabe & I. Inouye, 1996 (basis of record)
Orimanthis Rafinesque, 1810 (habitat flag source)
Orimanthis Rafinesque, 1810 (extant flag source)
Pachythamnion R.H. Thompson, 1971 (status source)
Paramesocena S. Locker & E. Martini, 1986 † (extant flag source)
Parkella F. Bernard, 1968 (habitat flag source)
Parkella F. Bernard, 1968 (extant flag source)
Parkella F. Bernard, 1968 (status source)
Parkella F. Bernard, 1968 (taxonomy source)
Parkella F. Bernard, 1968 (additional source)
Petalomonas micra R.E. Norris (habitat flag source)
Pexisperma Rafinesque, 1810 (extant flag source)
Pexisperma Rafinesque, 1810 (habitat flag source)
Phalodinium van Hoven, Gilchrist & Hamilton-Attwell, 1987 (habitat flag source)
Phalodinium van Hoven, Gilchrist & Hamilton-Attwell, 1987 (extant flag source)
Phaxantha Rafinesque, 1810 (extant flag source)
Phaxantha Rafinesque, 1810 (habitat flag source)
Phlyctis Rafinesque, 1810 (habitat flag source)
Phlyctis Rafinesque, 1810 (extant flag source)
Phoracis Rafinesque, 1810 (extant flag source)
Phoracis Rafinesque, 1810 (habitat flag source)
Physotris Rafinesque, 1810 (extant flag source)
Physotris Rafinesque, 1810 (habitat flag source)
Phytelis Rafinesque, 1810 (habitat flag source)
Phytelis Rafinesque, 1810 (extant flag source)
Pinguiochrysis M. Kawachi in M. Kawachi, M. Atsumi, H. Ikemoto & S. Miyachi, 2002 (habitat flag source)
Pinguiochrysis pyriformis M. Kawachi, M. Atsumi, H. Ikemoto & S. Miyachi, 2002 (habitat flag source)
Piriformachara J. Liu & X. Wu, 1985 † (extant flag source)

 Taxonomic remark

 for Alloeoneis J. Schumann, 1867

Suggested name only, for Navicula alternans; subsequently validly published as Alloioneis K.M. Schumann ex P.T. ... [details]

 Taxonomic remark

 for Fülöpia E. Nagy, 1965 †

Original incorrect spelling, corrected to Fueloepia per Index Nominum Genericorum and ICN, Art. 60.7. [details]

 Taxonomic remark

 for Hyalocharacium A. Pascher, 1929

From Index Nominum Algarum: Hyalocharacium chrysopyxidis Pascher: provisional name; species validly published in ... [details]

 Taxonomic remark

 for Sphaerosperma Pouchet, 1893

According to Index Nominum Algarum, Loeblich & Loeblich (?which reference) consider the name as invalid, ... [details]