Conferva filiformis Hornem., 1813 species synonym

Fucus contortus S.G.Gmelin species synonym

Halymenia filiformis (Hornemann) C.Agardh species synonym

Halymenia purpurascens var. crispata Grev., 1830 variety synonym

Ulva spongiformis O.F.Müller, 1778 species synonym

Gastridium filiforme var. intestiniformis Liebmann, 1845 variety synonym

Dumontia contorta (S.G.Gmelin) Ruprecht species accepted

Dumontia filiformis f. crispata (Grev.) Hauck, 1883 form synonym

Dumontia filiformis (Hornemann) Greville species synonym

Dumontia incrassata var. crispata (Grev.) Batters, 1902 variety synonym

Gastridium filiforme (Hornem.) Lynbye, 1819 species synonym

Dumontia incrassata (O.F.Müller) J.V.Lamouroux species synonym

Dumontia simplex A.D.Cotton, 1906 species accepted

Gastridium filiforme var. spongiforme (O.F.Müller) Lyngb., 1819 variety synonym

Ulva contorta (S.G.Gmelin) De Candolle, 1805 species synonym

Ulva filiformis Hornemann species synonym

Gastridium filiforme var. flavum Lyngb., 1819 variety synonym

Solenia filiformis (Hornemann) Sprengel species synonym

Ulva compressa var. purpurea C.Agardh, 1817 variety synonym

Dumontia filiformis var. crispata (Grev.) Grev., 1830 variety synonym

Ulva incrassata O.F.Mueller species synonym

Gastridium filiforme var. rugosum O.F.Müller ex Lyngb., 1819 variety synonym

Gastridium filiforme var. incrassatum (O.F.Müller) Lyngb., 1819 variety synonym

Halymenia filiformis var. incrassata (O.F.Müller) C.Agardh, 1822 variety synonym

Gastridium filiforme var. rugosum O.F.Müller variety homotypic synonym