Ceramium griffitsianum (J.E.Smith) C.Agardh, 1817 species synonym

Hutchinsia griffithsiana (J.E.Smith) S.F.Gray, 1821 species synonym

Spyridia clavata Kütz. species accepted

Spyridia montagneana Kütz., 1847 species synonym

Spyridia fusiformis Børgesen, 1937 species accepted

Spyridia filamentosa (Wulfen) Harv. species accepted

Fucus filamentosus Wulfen species synonym

Spyridia spinella Sonder, 1845 species synonym

Conferva griffithsiana J.E.Smith, 1812 species synonym

Spyridia velasquezii species accepted

Spyridia cupressina Kützing species accepted

Spyridia dasyoides Sond. species accepted

Spyridia hypnoides (Bory) Papenf. species accepted

Spyridia aculeata (C.Agardh ex Decne.) Kütz. species synonym

Thamnophora hypnoides Bory species synonym

Spyridia ericoides (Hering) Kütz., 1847 species synonym

Alsidium ericoides Hering, 1841 species synonym

Spyridia insignis (J.Agardh) J.Agardh, 1851 species synonym

Spyridia tetracantha Kütz., 1862 species synonym

Spyridia filamentosa subsp. arbuscula Sonder, 1855 subspecies synonym

Boryna griffithsiana (J.E.Smith) Bonnem., 1828 species synonym

Spyridia vilosissima Zanardini, 1851 species synonym

Ceramium filamentosum (Wulfen) C.Agardh, 1828 species synonym

Hutchinsia filamentosa (Wulfen) C.Agardh, 1824 species synonym

Bindera insignis J.Agardh, 1841 species synonym

Ceramium aculeatum C.Agardh ex Decaisne, 1841 species synonym

Spyridia biannulata J.Agardh, 1876 species synonym

Spyridia filamentosa var. griffithsiana (J.E.Smith) J.Agardh, 1851 variety synonym

Spyridia griffithsiana (J.E.Smith) G.C.Zuccarello, Prud'homme van Reine & H.Stegenga, 2004 species accepted

Polysiphonia filamentosa (Wulfen) Sprengel, 1827 species synonym

Spyridia confervoides Zanardini, 1851 species synonym

Spyridia filamentosa var. arbuscula Sonder, 1855 variety synonym

Spyridia breviarticulata J.Agardh, 1876 species synonym

Ceramium aculeatum C.Agardh species homotypic synonym