1. Species Pleonosporium boergesenii (A.B.Joly) R.E.Norris, 1985
2. Species Pleonosporium borreri (Smith) Nägeli, 1862
3. Species Pleonosporium callicladum R.E.Norris, 1985
4. Species Pleonosporium complanatum W.R.Taylor, 1945
5. Species Pleonosporium constrictum (Hering) Nägeli, 1862
6. Species Pleonosporium dichotomum Noda, 1972
7. Species Pleonosporium filicinum (Harvey ex J.Agardh) De Toni, 1903
8. Species Pleonosporium flexuosum (C.Agardh) Bornet, 1892
9. Species Pleonosporium globuliferum Levring, 1941
10. Species Pleonosporium harveyanum (J.Agardh) De Toni, 1903
11. Species Pleonosporium intricatum R.E.Norris, 1994
12. Species Pleonosporium japonicum Itono, 1971
13. Species Pleonosporium kobayashii Okamura, 1933
14. Species Pleonosporium mageshimense (Itono) R.E.Norris, 1985
15. Species Pleonosporium mazeense Noda, 1975
16. Species Pleonosporium mexicanum E.Y.Dawson, 1962
17. Species Pleonosporium paternoster Stegenga, 1986
18. Species Pleonosporium pedicellatum S.C.Lindstrom, M.J.Wynne & N.I.Calvin, 1983
19. Species Pleonosporium polymorphum Itono, 1971
20. Species Pleonosporium polystichum E.C.Oliveira, 1969
21. Species Pleonosporium pusillum Yamada, 1932
22. Species Pleonosporium pygmaeum N.L.Gardner, 1927
23. Species Pleonosporium ramulosum (J.Agardh) De Toni, 1903
24. Species Pleonosporium rhizoideum E.Y.Dawson, 1962
25. Species Pleonosporium segawae Yoshida, 1977
26. Species Pleonosporium squarrosum Kylin, 1925
27. Species Pleonosporium squarrulosum (Harvey) I.A.Abbott, 1972
28. Species Pleonosporium tohyamanum Tokida & Inaba, 1950
29. Species Pleonosporium vancouverianum (J.Agardh) Setchell & N.L.Gardner, 1903
30. Species Pleonosporium venustissimum (Montagne) De Toni, 1903
31. Species Pleonosporium wuellerstorfianum (Grunow) De Toni, 1903
32. Species Pleonosporium abysicola N.L.Gardner, 1927 accepted as Pleonosporium vancouverianum (J.Agardh) Setchell & N.L.Gardner, 1903
33. Species Pleonosporium brownianum (Harvey) Harvey-Gibson, 1893 accepted as Spongoclonium brownianum (Harvey) J.Agardh, 1892
34. Species Pleonosporium caribaeum (Børgesen) R.E.Norris, 1985 accepted as Spongoclonium caribaeum (Børgesen) M.J.Wynne, 2005 (synonym)
35. Species Pleonosporium caribbaeum (Boergesen) R Norris accepted as Pleonosporium caribaeum (Børgesen) R.E.Norris, 1985 accepted as Spongoclonium caribaeum (Børgesen) M.J.Wynne, 2005 (misspelling)
36. Species Pleonosporium codicola E.Y.Dawson, 1962 accepted as Ptilothamnion codicola (E.Y.Dawson) I.A.Abbott, 1971
37. Species Pleonosporium dasyoides (J.Agardh) De Toni, 1903 accepted as Pleonosporium squarrulosum (Harvey) I.A.Abbott, 1972
38. Species Pleonosporium elongatum Noda, 1970 accepted as Pleonosporium kobayashii Okamura, 1933 (synonym)
39. Species Pleonosporium felicinum (Harvey ex J. Agardh) De Toni accepted as Pleonosporium filicinum (Harvey ex J.Agardh) De Toni, 1903 (misspelling)
40. Species Pleonosporium hirtum (J.D.Hooker & Harvey) Laing, 1905 accepted as Lophothamnion hirtum (J.D.Hooker & Harvey) Womersley, 1998 (synonym)
41. Species Pleonosporium pinnatum Okamura & Segawa, 1936 accepted as Pleonosporium segawae Yoshida, 1977
42. Species Pleonosporium pinnatum (J.Agardh) De Toni, 1903 accepted as Pleonosporium borreri (Smith) Nägeli, 1862 (synonym)
43. Species Pleonosporium polycarpum N.L.Gardner, 1927 accepted as Pleonosporium squarrulosum (Harvey) I.A.Abbott, 1972
44. Species Pleonosporium saccorhiza Setchell & N.L.Gardner, 1930 accepted as Tiffaniella saccorhiza (Setchell & N.L.Gardner) Doty & Meñez, 1960
45. Species Pleonosporium suyehioroi Okamura, 1934 accepted as Tiffaniella suyehioroi (Okamura) Kaneko, 1976
46. Species Pleonosporium yagii (Yamada) R.E.Norris, 1985 accepted as Spongoclonium yagii (Yamada) H.-S.Kim & I.K.Lee, 2012

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