Acrochaete leptochaete (Huber) R.Nielsen, 1983 accepted as Ulvella leptochaete (Huber) R.Nielsen, C.J.O'Kelly & B.Wysor, 2013 (additional source)
Acrochaete viridis (Reinke) R.Nielsen, 1979 accepted as Ulvella viridis (Reinke) R.Nielsen, C.J.O'Kelly & B.Wysor, 2013 (additional source)
Acrochaete wittrockii (Wille) R.Nielsen, 1983 accepted as Ulvella wittrockii (Wille) R.Nielsen, C.J.O'Kelly & B.Wysor, 2013 (additional source)
Antithamnion cruciatum (C.Agardh) Nägeli, 1847 (additional source)
Bangia fuscopurpurea (Dillwyn) Lyngbye, 1819 (additional source)
Blastophysa rhizopus Reinke, 1889 (additional source)
Blidingia marginata (J.Agardh) P.J.L.Dangeard ex Bliding, 1963 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Bolbocoleon piliferum Pringsheim, 1862 (additional source)
Bryopsis hypnoides J.V.Lamouroux, 1809 (additional source)
Bryopsis plumosa (Hudson) C.Agardh, 1823 (additional source)
Callithamnion corymbosum (Smith) Lyngbye, 1819 (additional source)
Capsosiphon fulvescens (C.Agardh) Setchell & N.L.Gardner, 1920 (additional source)
Ceramium deslongchampsii Chauvin ex Duby, 1830 (additional source)
Ceramium diaphanum (Lightfoot) Roth, 1806 (additional source)
Ceramium rubrum C.Agardh, 1811 accepted as Ceramium virgatum Roth, 1797 (additional source)
Chaetomorpha aerea (Dillwyn) Kützing, 1849 (additional source)
Chaetomorpha linum (O.F.Müller) Kützing, 1845 (additional source)
Chondria dasyphylla (Woodward) C.Agardh, 1817 (additional source)
Cladophora albida (Nees) Kutzing, 1843 (additional source)
Cladophora ruchingeri (C.Agardh) Kützing, 1845 (additional source)
Cladophora rupestris (Linnaeus) Kützing, 1843 (additional source)
Cladophora sericea (Hudson) Kützing, 1843 (additional source)
Cladophora vagabunda (Linnaeus) Hoek, 1963 (additional source)
Corallina officinalis Linnaeus, 1758 (additional source)
Dasya baillouviana (S.G.Gmelin) Montagne, 1841 accepted as Dasya pedicellata (C.Agardh) C.Agardh, 1824 (additional source)
Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (additional source)
Dictyosiphon chordaria Areschoug, 1847 (additional source)
Ectocarpus fasciculatus Harvey, 1841 (additional source)
Ectocarpus siliculosus (Dillwyn) Lyngbye, 1819 (additional source)
Enteromorpha ahlneriana Bliding, 1944 accepted as Ulva linza Linnaeus, 1753 (basis of record)
Enteromorpha clathrata (Roth) Greville, 1830 accepted as Ulva clathrata (Roth) C.Agardh, 1811 (additional source)
Enteromorpha flexuosa (Wulfen) J.Agardh, 1883 accepted as Ulva flexuosa Wulfen, 1803 (additional source)
Enteromorpha intestinalis (Linnaeus) Nees, 1820 accepted as Ulva intestinalis Linnaeus, 1753 (additional source)
Enteromorpha linza (Linnaeus) J.Agardh, 1883 accepted as Ulva linza Linnaeus, 1753 (additional source)
Enteromorpha prolifera (O.F.Müller) J.Agardh, 1883 accepted as Ulva prolifera O.F.Müller, 1778 (additional source)
Enteromorpha torta (Mertens) Reinbold, 1893 accepted as Ulva torta (Mertens) Trevisan, 1842 (additional source)
Epicladia perforans (Huber) R.Nielsen, 1980 (additional source)
Erythrotrichia carnea (Dillwyn) J.Agardh, 1883 (additional source)
Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882 (additional source)
Gomontia polyrhiza (Lagerheim) Bornet & Flahault, 1888 (additional source)
Leathesia difformis Areschoug, 1847 accepted as Leathesia marina (Lyngbye) Decaisne, 1842 (additional source)
Myrionema strangulans Greville, 1827 (additional source)
Petalonia zosterifolia (Reinke) Kuntze, 1898 accepted as Planosiphon zosterifolius (Reinke) McDevit & G.W.Saunders, 2017 (additional source)
Phaeophila dendroides (P.Crouan & H.Crouan) Batters, 1902 (additional source)
Polysiphonia denudata (Dillwyn) Greville ex Harvey, 1833 accepted as Carradoriella denudata (Dillwyn) Savoie & G.W.Saunders, 2019 (additional source)
Polysiphonia elongata (Hudson) Sprengel, 1827 accepted as Carradoriella elongata (Hudson) Savoie & G.W.Saunders, 2019 (additional source)
Polysiphonia fibrillosa (C.Agardh) Sprengel, 1827 accepted as Leptosiphonia fibrillosa (Agardh) Savoie & G.W.Saunders, 2019 (additional source)
Polysiphonia fucoides (Hudson) Greville, 1824 accepted as Vertebrata fucoides (Hudson) Kuntze, 1891 (additional source)
Polysiphonia stricta (Mertens ex Dillwyn) Greville, 1824 (additional source)
Pringsheimiella scutata (Reinke) Marchewianka, 1925 accepted as Ulvella scutata (Reinke) R.Nielsen, C.J.O'Kelly & B.Wysor, 2013 (additional source)
Protectocarpus speciosus (Børgesen) Kornmann, 1955 (additional source)
Pseudolithoderma extensum (P.Crouan & H.Crouan) S.Lund, 1959 (additional source)
Pterothamnion plumula (J.Ellis) Nägeli, 1855 (additional source)
Punctaria latifolia Greville, 1830 (additional source)
Ralfsia verrucosa (Areschoug) Areschoug, 1845 (additional source)
Scytosiphon lomentaria (Lyngbye) Link, 1833 (additional source)
Sphacelaria cirrosa (Roth) C.Agardh, 1824 (additional source)
Spongomorpha aeruginosa (Linnaeus) Hoek, 1963 (additional source)
Stictyosiphon soriferus (Reinke) Rosenvinge, 1935 (additional source)
Streblonema parasiticum (Sauvageau) De Toni, 1895 (additional source)
Streblonema stilophorae (P.L.Crouan & H.M.Crouan) Kylin, 1908 accepted as Microspongium stilophorae (P.Crouan & H.Crouan) Cormaci & G.Furnari, 2012 (additional source)
Streblonema tenuissimum Hauck, 1884 accepted as Microspongium stilophorae (P.Crouan & H.Crouan) Cormaci & G.Furnari, 2012 (additional source)
Stypocaulon scoparium (Linnaeus) Kützing, 1843 accepted as Halopteris scoparia (Linnaeus) Sauvageau, 1904 (additional source)
Ulothrix flacca (Dillwyn) Thuret, 1863 (additional source)
Ulvaria obscura (Kützing) P.Gayral ex C.Bliding, 1969 (additional source)