Antithamnion cruciatum (C.Agardh) Nägeli, 1847 (additional source)
Audouinella daviesii (Dillwyn) Woelkerling, 1971 accepted as Colaconema daviesii (Dillwyn) Stegenga, 1985 (additional source)
Audouinella secundata (Lyngbye) P.S.Dixon, 1976 accepted as Acrochaetium secundatum (Lyngbye) Nägeli, 1858 (additional source)
Bangia fuscopurpurea (Dillwyn) Lyngbye, 1819 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Bonnemaisonia hamifera Hariot, 1891 (additional source)
Bryopsis hypnoides J.V.Lamouroux, 1809 (additional source)
Callithamnion corymbosum (Smith) Lyngbye, 1819 (additional source)
Ceramium diaphanum (Lightfoot) Roth, 1806 (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)
Chorda filum (Linnaeus) Stackhouse, 1797 (additional source)
Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (additional source)
Cladophora sericea (Hudson) Kützing, 1843 (additional source)
Cladophora vagabunda (Linnaeus) Hoek, 1963 (additional source)
Corallina officinalis Linnaeus, 1758 (additional source)
Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (additional source)
Dictyosiphon foeniculaceus (Hudson) Greville, 1830 (additional source)
Ectocarpus siliculosus (Dillwyn) Lyngbye, 1819 (additional source)
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)
Erythrotrichia carnea (Dillwyn) J.Agardh, 1883 (additional source)
Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882 (additional source)
Gelidium pusillum (Stackhouse) Le Jolis, 1863 (additional source)
Gloiosiphonia capillaris (Hudson) Carmichael, 1833 (additional source)
Hildenbrandia rubra (Sommerfelt) Meneghini, 1841 (additional source)
Kornmannia leptoderma (Kjellman) Bliding, 1969 (additional source)
Laminariocolax tomentosoides (Farlow) Kylin, 1947 (additional source)
Leathesia difformis Areschoug, 1847 accepted as Leathesia marina (Lyngbye) Decaisne, 1842 (additional source)
Monostroma grevillei (Thuret) Wittrock, 1866 (additional source)
Petalonia fascia (O.F.Müller) Kuntze, 1898 (additional source)
Petalonia zosterifolia (Reinke) Kuntze, 1898 accepted as Planosiphon zosterifolius (Reinke) McDevit & G.W.Saunders, 2017 (additional source)
Phymatolithon lenormandii (J.E.Areschoug) W.H.Adey, 1966 (additional source)
Pilayella littoralis (Linnaeus) Kjellman, 1872 accepted as Pylaiella littoralis (Linnaeus) Kjellman, 1872 (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 subtilissima Montagne, 1840 (additional source)
Porphyropsis coccinea (J.Agardh ex Areschoug) Rosenvinge, 1909 (additional source)
Pringsheimiella scutata (Reinke) Marchewianka, 1925 accepted as Ulvella scutata (Reinke) R.Nielsen, C.J.O'Kelly & B.Wysor, 2013 (additional source)
Punctaria latifolia Greville, 1830 (additional source)
Ralfsia verrucosa (Areschoug) Areschoug, 1845 (additional source)
Rhizoclonium riparium (Roth) Harvey, 1849 (additional source)
Scytosiphon lomentaria (Lyngbye) Link, 1833 (additional source)
Sphacelaria fusca (Hudson) S.F.Gray, 1821 (additional source)
Sphacelaria rigidula Kützing, 1843 (additional source)
Sphaerotrichia divaricata (C.Agardh) Kylin, 1940 (additional source)
Spongonema tomentosum (Hudson) Kützing, 1849 (additional source)
Streblonema chordariae (Wollny) A.D.Cotton ex Lily Newton, 1931 accepted as Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (additional source)
Streblonema fasciculatum Thuret, 1863 (additional source)
Stylonema alsidii (Zanardini) K.M.Drew, 1956 (additional source)
Ulothrix flacca (Dillwyn) Thuret, 1863 (additional source)
Ulva lactuca Linnaeus, 1753 (additional source)