Sphaerococcus osmunda (S.G.Gmelin) Stackh., 1797 species synonym

Chondria osmunda (S.G.Gmelin) Chevalier, 1836 species synonym

Osmundea hybrida (DC.) K.W.Nam species accepted

Laurencia caespitosa J.V.Lamour. species synonym

Fucus hybridus DC., 1805 species synonym

Laurencia hybrida (A.P.de Candolle) T.Lestiboudois species synonym

Fucus pinnatifidus var. angustus Turner, 1802 variety synonym

Osmundea spectabilis (Postels & Ruprecht) K.W.Nam, 1994 species accepted

Laurencia spectabilis Postels & Ruprecht species synonym

Osmundea ramosissima (Oeder) Athanasiadis species heterotypic synonym

Laurencia platycephala Kützing species synonym

Fucus ramosissimus Oeder species synonym

Osmundea verlaquei G.Furnari, 1994 species accepted

Laurencia verlaquei Cormaci, G.Furnari & Serio, 1994 species synonym

Osmundea truncata (Kützing) K.W.Nam & Maggs species accepted

Laurencia truncata Kützing species synonym

Osmundea osmunda (S.G.Gmel.) K.W.Nam & Maggs species accepted

Laurencia pinnatifida var. osmunda (Turner) Kütz., 1849 variety synonym

Fucus osmunda S.G.Gmelin, 1768 species synonym

Laurencia osmunda (S.G.Gmelin) Maggs & Hommersand, 1993 species synonym

Fucus multifidus Hudson, 1778 species synonym

Fucus pinnatifidus var. osmunda Turner, 1802 variety synonym

Osmundea pelagosae (Schiffn.) K.W.Nam, 1994 species accepted

Rodriguezella pelagosae Schiffn., 1931 species synonym

Laurencia pelagosae (Schiffn.) Erceg., 1949 species synonym

Laurencia lata M.A.Howe & W.R.Taylor species synonym

Laurencia bolivarii N.Rodríguez Rios, 1981 species synonym

Osmundea caspica (Zinova, Zaberzhinskaya & Novosti Sistematiki Nizshikh Rastenii, 1968) Florence Rousseau, Delphine Gey & Akira Kurihara, 2017 species accepted

Laurencia pinnatifida var. angusta (Turner) Grev., 1830 variety synonym

Fucus oederi Gunnerus, 1772 species synonym

Osmundea bolivarii (N.Rodríguez-Rios) M.García-Ortíz, 2006 species synonym

Laurencia pinnatifida var. spectabilis (Postels & Ruprecht) Farlow, Anderson & Eaton, 1878 variety synonym

Osmundea sanctarum M.T.Fujii & Rocha-Jorge species accepted

Osmundea spec (Gunnerus) G.Furnari species accepted

Chondria pinnatifida var. osmunda (S.G.Gmelin) C.Agardh, 1822 variety synonym

Osmundea lata (M.Howe & W.R.Taylor) Yonesh., M.T.Fujii & Gurgel species accepted

Osmundea oederi (Gunnerus) G.Furnari species accepted

Fucus pinnatifidus Hornemann species synonym

Laurencia caespitosa var. subsimplex Mont. variety synonym

Fucus pinnatifidus Strøm species synonym

Laurencia hybrida (DC.) Lenorm. ex Duby species synonym

Laurencia hybrida (DC.) Lenorm. species homotypic synonym