1. Species Lessonia adamsiae C.H.Hay, 1987
2. Species Lessonia berteroana Montagne, 1842
3. Species Lessonia brevifolia J.Agardh, 1894
4. Species Lessonia ciliata Postels & Ruprecht, 1840
5. Species Lessonia corrugata A.H.S.Lucas, 1931
6. Species Lessonia flavicans Bory de Saint-Vincent, 1825
7. Species Lessonia media Zuccarello & D'Archino, 2024
8. Species Lessonia meridionalis Zuccarello & D'Archino, 2024
9. Species Lessonia nigrescens Bory de Saint-Vincent, 1826
10. Species Lessonia searlesiana Asensi & de Reviers, 2009
11. Species Lessonia septentrionalis Zuccarello & D'Archino, 2024
12. Species Lessonia spicata (Suhr) Santelices, 2012
13. Species Lessonia suhrii J.Agardh, 1841
14. Species Lessonia tholiformis C.H.Hay, 1989
15. Species Lessonia trabeculata Villouta & Santelices, 1986
16. Species Lessonia variegata J.Agardh, 1878
17. Species Lessonia binderi Sonder, 1849 accepted as Lessonia nigrescens Bory de Saint-Vincent, 1826 (synonym)
18. Species Lessonia dubia Gain, 1912 accepted as Ascoseira mirabilis Skottsberg, 1907
19. Species Lessonia frutescens Skottsberg, 1907 accepted as Lessonia flavicans Bory de Saint-Vincent, 1825 (synonym)
20. Species Lessonia fuscescens Bory de Saint-Vincent, 1826 accepted as Lessonia flavicans Bory de Saint-Vincent, 1825 (synonym)
21. Species Lessonia grandifolia A.Gepp & E.S.Gepp, 1905 accepted as Himantothallus grandifolius (A.Gepp & E.S.Gepp) Zinova, 1959
22. Species Lessonia laminaria Kützing, 1843 accepted as Pseudolessonia laminarioides (Postels & Ruprecht) G.Y.Cho, N.G.Klochkova, T.N.Krupnova & Boo, 2006 (synonym)
23. Species Lessonia laminariiformis Ruprecht, 1850 accepted as Pseudolessonia laminarioides (Postels & Ruprecht) G.Y.Cho, N.G.Klochkova, T.N.Krupnova & Boo, 2006
24. Species Lessonia laminarioides Postels & Ruprecht, 1840 accepted as Pseudolessonia laminarioides (Postels & Ruprecht) G.Y.Cho, N.G.Klochkova, T.N.Krupnova & Boo, 2006
25. Species Lessonia littoralis Farlow & Setchell ex Tilden, 1900 accepted as Lessoniopsis littoralis (Farlow & Setchell ex Tilden) Reinke, 1903
26. Species Lessonia ovata Hooker f. & Harvey, 1847 accepted as Lessonia flavicans Bory de Saint-Vincent, 1825 (synonym)
27. Species Lessonia quercifolia Bory de Saint-Vincent, 1826 accepted as Myriodesma quercifolium (Bory de Saint-Vincent) J.Agardh, 1848
28. Species Lessonia simulans A.Gepp & E.S.Gepp, 1906 accepted as Himantothallus grandifolius (A.Gepp & E.S.Gepp) Zinova, 1959
29. Species Lessonia sinclairii Harvey ex J.D.Hooker & Harvey, 1847 accepted as Laminaria sinclairii (Harvey ex J.D.Hooker & Harvey) Farlow, Anderson & Eaton, 1878
30. Species Lessonia vadosa Searles, 1978 accepted as Lessonia flavicans Bory de Saint-Vincent, 1825 (synonym)
31. Species Lessonia longipes (Bory) Ruprecht (uncertain)
32. Species Lessonia repens Ruprecht, 1850 (uncertain)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License