• Antithamnion americanum (Harvey) Kjellman, 1883 accepted as Scagelia americana (Harvey) Athanasiadis, 1996
• Antithamnion cruciatum (C.Agardh) Nägeli, 1847
• Antithamnion pylaisaei (Montagne) Kjellman, 1883 accepted as Scagelia pylaisaei (Montagne) M.J.Wynne, 1985
• Antithamnionella floccosa (O.F.Müller) Whittick, 1980
• Antithamnionella pylaisaei (Mont.) Kjellm. accepted as Antithamnion pylaisaei (Montagne) Kjellman, 1883 accepted as Scagelia pylaisaei (Montagne) M.J.Wynne, 1985
• Ceramium cimbricum H.E.Petersen, 1924
• Ceramium circinatum (Kützing) J.Agardh, 1851
• Ceramium deslongchampsii Chauvin ex Duby, 1830
• Ceramium diaphanum (Lightfoot) Roth, 1806
• Ceramium diaphanum var. elegans (Roth) Roth, 1806 accepted as Ceramium siliquosum var. elegans (Roth) G.Furnari, 1999
• Ceramium elegans (Roth) Ducluzeau, 1805 accepted as Ceramium siliquosum var. elegans (Roth) G.Furnari, 1999
• Ceramium rubrum C.Agardh, 1811 accepted as Ceramium virgatum Roth, 1797
• Ceramium siliquosum (Kützing) Maggs & Hommersand, 1993
• Ceramium siliquosum var. elegans (Roth) G.Furnari, 1999
• Ceramium strictum (Kützing) Rabenhorst, 1847 accepted as Ceramium deslongchampsii Chauvin ex Duby, 1830
• Ceramium strictum Greville & Harvey, 1846 accepted as Ceramium tenuicorne (Kützing) Waern, 1952
• Ceramium tenuicorne (Kützing) Waern, 1952
• Ceramium virgatum Roth, 1797
• Pterothamnion plumula (J.Ellis) Nägeli, 1855
• Scagelia americana (Harvey) Athanasiadis, 1996
• Scagelia pylaisaei (Montagne) M.J.Wynne, 1985