Thamnophora seaforthii (Turner) C.Agardh, 1822 species synonym

Alsidium pusillum E.Y.Dawson species accepted

Alsidium corallinum C.Agardh species accepted

Bryothamnion seaforthii (Turner) Kütz. species synonym

Fucus seaforthii Turner species synonym

Bryothamnion triquetrum (S.G.Gmelin) M.Howe species synonym

Thamnophora triangularis C.Agardh, 1822 species synonym

Fucus triqueter S.G.Gmelin species synonym

Fucus triangularis J.F.Gmelin, 1792 species synonym

Bryothamnion triangularis (J.F.Gmelin) species synonym

Alsidium oliveiranum S.M.Guimarães & M.T.Fujii species accepted

Acanthophora triangularis (J.F.Gmelin) Gaillon, 1828 species synonym

Alsidium seaforthii (Turner) J.Agardh species accepted

Sphaerococcus helminthochorton (Schwendimann) C.Agardh species synonym

Gracilaria helminthochorton (Schwendimann) J.Agardh, 1842 species synonym

Bryothamnion triangulare (J.F.Gmelin) Kütz., 1849 species synonym

Amansia seaforthii (Turner) Greville, 1830 species synonym

Alsidium triquetrum (S.G.Gmelin) Trevisan species accepted

Alsidium helminthochorton (Schwendimann) Kütz., 1843 species accepted

Physcophora triangularis (J.F.Gmelin) Kütz., 1843 species synonym

Conferva helminthochortos Schwendimann, 1780 species synonym

Fucus helminthocorton (Schwendimann) Tourrette, 1782 species synonym