1. Species Dudresnaya abbottiae Afonso-Carrillo & Tabares, 2004
2. Species Dudresnaya australis J.Agardh ex Setchell, 1912
3. Species Dudresnaya babbittiana Abbott & K.J.McDermid, 2001
4. Species Dudresnaya bermudensis Setchell, 1912
5. Species Dudresnaya canariensis Tabares, Afonso-Carrillo, Sansón & Reyes, 1997
6. Species Dudresnaya canescens J.Agardh, 1899
7. Species Dudresnaya capricornica Robins & Kraft, 1985
8. Species Dudresnaya colombiana W.R.Taylor, 1945
9. Species Dudresnaya crassa M.A.Howe, 1905
10. Species Dudresnaya cupressina Bonnemaison
11. Species Dudresnaya georgiana Searles, 1983
12. Species Dudresnaya hawaiiensis R.K.S.Lee, 1963
13. Species Dudresnaya hudsonii Harvey
14. Species Dudresnaya japonica Okamura, 1902
15. Species Dudresnaya kuroshioensis Kajimura, 1994
16. Species Dudresnaya littleri I.A.Abbott, 1996
17. Species Dudresnaya minima Okamura, 1932
18. Species Dudresnaya multiramosa Afonso-Carrillo, Sansón & Reyes, 2002
19. Species Dudresnaya okiensis Kajimura, 1993
20. Species Dudresnaya patula Eiseman & J.N.Norris, 1981
21. Species Dudresnaya puertoricensis Searles & Ballantine, 1986
22. Species Dudresnaya rubens (Hudson) Trevisan
23. Species Dudresnaya verticillata (Withering) Le Jolis, 1863
24. Species Dudresnaya capricornia Robins & Kraft accepted as Dudresnaya capricornica Robins & Kraft, 1985 (misspelling)
25. Species Dudresnaya caribaea (J.Agardh) Setchell, 1912 accepted as Acrosymphyton caribaeum (J.Agardh) Sjöstedt, 1926 (synonym)
26. Species Dudresnaya clavata (Kützing) Trevisan, 1848 accepted as Helminthora divaricata (C.Agardh) J.Agardh, 1852 (synonym)
27. Species Dudresnaya coccinea (C.Agardh) P.L.Crouan & H.M.Crouan, 1835 accepted as Dudresnaya verticillata (Withering) Le Jolis, 1863
28. Species Dudresnaya dalmatica (Kützing) Zanardini, 1865 accepted as Calosiphonia dalmatica (Kützing) Bornet & Flahault, 1883 (synonym)
29. Species Dudresnaya divaricata (C.Agardh) J.Agardh, 1842 accepted as Helminthora divaricata (C.Agardh) J.Agardh, 1852
30. Species Dudresnaya lubrica M.M.Littler, 1974 accepted as Dudresnaya littleri I.A.Abbott, 1996 (synonym)
31. Species Dudresnaya lubrica (Lyngbye) Trevisan, 1848 accepted as Gloiosiphonia capillaris (Hudson) Carmichael, 1833 (synonym)
32. Species Dudresnaya multifida (Lyngbye) Trevisan, 1848 accepted as Nemalion multifidum (Lyngbye) Chauvin, 1842 (synonym)
33. Species Dudresnaya nemalion (Bertoloni) Trevisan, 1848 accepted as Nemalion elminthoides (Velley) Batters, 1902 (synonym)
34. Species Dudresnaya nodulosa Ercegovic, 1949 accepted as Gulsonia nodulosa (Ercegovic) Feldmann & G.Feldmann, 1967
35. Species Dudresnaya purpurifera J.Agardh, 1842 accepted as Acrosymphyton purpuriferum (J.Agardh) G.Sjöstedt, 1926
36. Species Dudresnaya ramosissima (Zanardini) Trevisan, 1848 accepted as Nemalion ramosissimum Zanardini, 1847 accepted as Helminthora divaricata (C.Agardh) J.Agardh, 1852 (synonym)

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