• Alaria Greville, 1830
• Alaria J. Morris & Lycett, 1851 † accepted as Dicroloma Gabb, 1868 †
• Alaria Schrank, 1788
• Alaria (Paralaria) Krause, 1914 accepted as Paralaria Krause, 1914
• Alaria (Paralaria) mustelae Bosma, 1931 accepted as Paralaria mustelae (Bosma, 1931) Dubois, 1963
• Alaria (Paralaria) taxideae Swanson & Erickson, 1946 accepted as Paralaria taxideae Swanson & Erickson, 1946
• Alaria acicularis Stoliczka, 1867 † (uncertain > unassessed)
• Alaria adenocephala (Beckerdite, Miller & Harkema, 1971) Achatz, Chermak, Martens, Woodyard, Rosser, Pulis, Weinstein, McAllister, Kinsella & Tkach, 2022
• Alaria alaria accepted as Alaria alata (Goeze, 1782) Krause, 1914
• Alaria alata (Goeze, 1782) Krause, 1914
• Alaria alternans Terquem & Jourdy, 1869 † (uncertain > unassessed)
• Alaria americana Hall & Wigdor, 1918
• Alaria amplexicaulis Martens, 1866 accepted as Undaria pinnatifida (Harvey) Suringar, 1873
• Alaria angusta Kjellman, 1889
• Alaria arisaemoides Augustine & Urtibe, 1927
• Alaria armata J. Morris & Lycett, 1851 † accepted as Dicroloma armata (J. Morris & Lycett, 1851) †
• Alaria asoviensis (Skrjabin, 1923) Issaitschikov, 1927
• Alaria athulia (A. d'Orbigny, 1850) † accepted as Dicroloma athulia (A. d'Orbigny, 1850) †
• Alaria bicornis Blake, 1905 † accepted as Bicorempterus elegans (Hudleston, 1884) †
• Alaria bispinosa (J. Phillips, 1829) † (uncertain > taxon inquirendum)
• Alaria bispinosa var. elegans Hudleston, 1884 † accepted as Bicorempterus elegans (Hudleston, 1884) †
• Alaria canadensis Webster & Wolfgang, 1956
• Alaria canis La Rue & Fallis, 1936
• Alaria clathrata (Diesing, 1950) La Rue, 1926 accepted as Paralaria clathrata (Diesing, 1850) Dubois, 1938
• Alaria clathrata Terquem & Jourdy, 1869 † (uncertain > taxon inquirendum)
• Alaria cochleata (Quenstedt, 1857) † accepted as Dicroloma cochleatum (Quenstedt, 1857) †
• Alaria compacta Lutz, 1928 accepted as Hysteromorpha compacta (Lutz, 1928) Dubois, 1937 accepted as Austrodiplostomum compactum (Lutz, 1928) Dubois, 1970
• Alaria cordata Tilden, 1898
• Alaria corrugata Miyabe, 1902 accepted as Alaria praelonga Kjellman, 1889
• Alaria costata Fallis
• Alaria cotonata Tate, 1867 † (uncertain > unassessed)
• Alaria crassifolia Kjellman, 1885
• Alaria crispa Kjellman, 1889
• Alaria curtipes Saunders, 1901 accepted as Alaria marginata Postels & Ruprecht, 1840
• Alaria dasyuri (Dubois & Angel, 1972) Achatz, Chermak, Martens, Woodyard, Rosser, Pulis, Weinstein, McAllister, Kinsella & Tkach, 2022
• Alaria delisei (Bory) Greville, 1830 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria despreauxi J.Agardh, 1870 accepted as Alaria pylaiei (Bory) Greville, 1830
• Alaria dolichorachis
• Alaria dolichorachis f. longipes Miyabe, 1928 accepted as Alaria grandifolia J.Agardh, 1872 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria dolichorhachis Kjellman, 1883 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria dolichorhachis f. typica Miyabe & Nagai, 1940 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria dubia Chandler & Rausch, 1946
• Alaria elliptica Kjellman, 1883
• Alaria elongata Lutz, 1928 accepted as Tylodelphys elongata (Lutz, 1928) Dubois, 1937
• Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta f. angustifolia Postels & Ruprecht, 1840
• Alaria esculenta f. australis Kjellman, 1883 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta f. fasciculata Strömfelt, 1886 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta f. latifolia Postels & Ruprecht, 1840 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta f. musaefolia (Pylaie) Kjellman, 1883 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta f. musifolia (de la Pylaie) Kjellman
• Alaria esculenta f. pinnata (Gobi) Foslie, 1886 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta f. pinnatifida Postels & Ruprecht, 1840
• Alaria esculenta f. polyphylla (S.G.Gmelin) Postels & Ruprecht, 1840 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta var. latifolia Postels & Ruprecht
• Alaria esculenta var. musifolia (De la Pylaie) Kjellman, 1883 accepted as Alaria musifolia (De la Pylaie) J.Agardh, 1872
• Alaria esculenta var. noltei Rabenhorst accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria esculenta var. pinnata (Gobi) Kjellman, 1890 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria fistulosa Postels & Ruprecht, 1840 accepted as Eualaria fistulosa (Postels & Ruprecht) M.J.Wynne, 2009
• Alaria fistulosa f. platyphylla Setchell, 1901 accepted as Eualaria fistulosa (Postels & Ruprecht) M.J.Wynne, 2009
• Alaria fistulosa f. stenophylla Setchell, 1903 accepted as Eualaria fistulosa (Postels & Ruprecht) M.J.Wynne, 2009
• Alaria flagellaris Strömfelt, 1886
• Alaria fragilis De A.Saunders, 1901
• Alaria fragilis f. bullata Saunders, 1901 accepted as Alaria marginata Postels & Ruprecht, 1840
• Alaria freundi Sprehn, 1932
• Alaria gagnebini Thurman, 1867 † accepted as Dicroloma gagnebini (Thurman, 1867) †
• Alaria glandina Stoliczka, 1867 † (uncertain > unassessed)
• Alaria grandifolia J.Agardh, 1872 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria hexagona J. Morris & Lycett, 1851 † (uncertain > unassessed)
• Alaria hudlestoni E. Wilson, 1887 † accepted as Spinigera hudlestoni (E. Wilson, 1887) †
• Alaria intermedia (Olivier & Odlaug, 1938) Odlaug, 1940
• Alaria laevigata J. Morris & Lycett, 1851 † (uncertain > unassessed)
• Alaria lanceolata Kjellman, 1883 accepted as Alaria taeniata Kjellman, 1889 accepted as Alaria marginata Postels & Ruprecht, 1840
• Alaria laticosta Kjellman, 1889 accepted as Alaria angusta Kjellman, 1889
• Alaria linearis Strömfelt, 1886 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria longipes (Ruprecht) De Toni, 1895
• Alaria macrophylla Miyabe, 1902
• Alaria macroptera (Ruprecht) Yendo, 1919 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria marcianae (La Rue, 1917) Walton, 1950
• Alaria marginata Postels & Ruprecht, 1840
• Alaria marginata f. musiformis Postels & Ruprecht, 1840 accepted as Alaria marginata Postels & Ruprecht, 1840
• Alaria marginata f. nana (H.F.Schrader) F.S.Collins, 1913 accepted as Alaria marginata Postels & Ruprecht, 1840
• Alaria membranacea J.Agardh, 1872 accepted as Alaria pylaiei (Bory) Greville, 1830
• Alaria membranifolia Strömfelt (uncertain)
• Alaria michiganensis Hall & Wigdor, 1918
• Alaria minnesotae Chandler, 1954
• Alaria minuta Chandler & Rausch, 1946
• Alaria monodactyla Hamlin, 1884 † (uncertain > unassessed)
• Alaria musaefolia (Bachelot de la Pylaie) J.Agardh, 1872 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Alaria musifolia (De la Pylaie) J.Agardh, 1872
• Alaria mustelae Bosma, 1931 accepted as Paralaria mustelae (Bosma, 1931) Dubois, 1963
• Alaria nana H.F.Schrader, 1903 accepted as Alaria marginata Postels & Ruprecht, 1840
• Alaria nasuae La Rue & Townsend, 1927
• Alaria oblonga Kjellman, 1883
• Alaria ochotensis Yendo, 1919
• Alaria oregonensis La Rue & Barine, 1927
• Alaria ovalis (Chandler & Rausch, 1946) Achatz, Chermak, Martens, Woodyard, Rosser, Pulis, Weinstein, McAllister, Kinsella & Tkach, 2022
• Alaria pagoda J. Morris & Lycett, 1851 † (uncertain > unassessed)
• Alaria paradisea (Miyabe & Nagai) Widdowson, 1972
• Alaria paradoxa J. Morris & Lycett, 1851 † (uncertain > unassessed)