1. Species Lomentaria amplexans R.E.Norris, 1987
2. Species Lomentaria articulata (Hudson) Lyngbye, 1819
3. Species Lomentaria australis (Kützing) Levring, 1946
4. Species Lomentaria benahoarensis Afonso-Carrillo, Sangil & Sansón, 2009
5. Species Lomentaria caespitosa (Harvey) V.J.Chapman & Dromgoole, 1970
6. Species Lomentaria caseae E.Y.Dawson, 1946
7. Species Lomentaria chylocladiella Funk, 1955
8. Species Lomentaria clavellosa (Lightfoot ex Turner) Gaillon, 1828
9. Species Lomentaria claviformis Ercegovic, 1956
10. Species Lomentaria compressa (Kützing) Kylin, 1931
11. Species Lomentaria corallicola Børgesen, 1939
12. Species Lomentaria diffusa Stegenga, Bolton & R.J.Anderson, 1997
13. Species Lomentaria drouetii E.Y.Dawson, 1944
14. Species Lomentaria ercegovicii Verlaque, Boudouresque, Meinesz, Giraud & Marcot Coqueugniot, 1977
15. Species Lomentaria firma (J.Agardh) Falkenberg, 1879
16. Species Lomentaria flaccida Tak.Tanaka, 1944
17. Species Lomentaria gracillima Masuda & Kogame, 2002
18. Species Lomentaria hakodatensis Yendo, 1920
19. Species Lomentaria indica Weber-van Bosse, 1928
20. Species Lomentaria jabukae Ercegovic, 1956
21. Species Lomentaria lubrica (Yendo) Yamada, 1932
22. Species Lomentaria mauritiana Børgesen, 1944
23. Species Lomentaria monochlamydea (J.Agardh) Kylin, 1931
24. Species Lomentaria okamurae Segawa, 1948
25. Species Lomentaria orcadensis (Harvey) Collins, 1937
26. Species Lomentaria ovalis
27. Species Lomentaria pinnata Segawa, 1938
28. Species Lomentaria pyramidalis Kraft & Womersley, 1996
29. Species Lomentaria rawitscheri A.B.Joly, 1957
30. Species Lomentaria saxigena V.J.Chapman & Dromgoole, 1970
31. Species Lomentaria secunda (J.D.Hooker & Harvey) V.J.Chapman & Domgoole, 1970
32. Species Lomentaria strumosa M.J.Wynne, 1998
33. Species Lomentaria subdichotoma Ercegovic, 1956
34. Species Lomentaria tenera Kützing, 1849
35. Species Lomentaria umbellata (J.D.Hooker & Harvey) Yendo, 1916
36. Species Lomentaria uncinata Meneghini, 1840
37. Species Lomentaria verticillata Funk, 1955
38. Species Lomentaria acicularis (J.Agardh) Falkenberg, 1879 accepted as Lomentaria articulata (Hudson) Lyngbye, 1819
39. Species Lomentaria affinis (Hooker & Harvey) Kützing, 1849 accepted as Champia affinis (J.D.Hooker & Harvey) Harvey, 1853 (synonym)
40. Species Lomentaria ambigua Kützing, 1865 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (synonym)
41. Species Lomentaria baileyana (Harvey) Farlow, 1876 accepted as Hooperia divaricata (Durant) M.J.Wynne, C.W.Schneider & G.W.Saunders, 2019
42. Species Lomentaria catenata Harvey, 1857 accepted as Fushitsunagia catenata (Harvey) Filloramo & G.W.Saunders, 2016
43. Species Lomentaria clavata (Roth) J.Agardh, 1852 accepted as Gastroclonium clavatum (Roth) Ardissone, 1883 (synonym)
44. Species Lomentaria corallina (Suhr) Kützing, 1865 accepted as Erythroclonium corallinum (Suhr) Holmes, 1896
45. Species Lomentaria corynephora (J.Agardh) Kylin, 1931 accepted as Semnocarpa corynephora (J.Agardh) Huisman, Foard & Kraft, 1993 (synonym)
46. Species Lomentaria dasyclada Kützing, 1865 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (synonym)
47. Species Lomentaria divaricata (Durant) M.J.Wynne, 2013 accepted as Hooperia divaricata (Durant) M.J.Wynne, C.W.Schneider & G.W.Saunders, 2019
48. Species Lomentaria fasciata (Meneghini) Kützing, 1849 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (synonym)
49. Species Lomentaria filiformis Kützing, 1865 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (synonym)
50. Species Lomentaria fruticulosa Reinbold, 1899 accepted as Lomentaria australis (Kützing) Levring, 1946 (synonym)
51. Species Lomentaria furcata (C.Agardh) Zanardini, 1840 accepted as Gloiocladia furcata (C.Agardh) J.Agardh, 1842
52. Species Lomentaria gracilis Audouin, 1826 accepted as Jania virgata (Zanardini) Montagne, 1846 (synonym)
53. Species Lomentaria impudica Montagne, 1840 accepted as Catenella impudica (Montagne) J.Agardh, 1852
54. Species Lomentaria intertexta Chauvin ex Duby, 1830 accepted as Champia parvula (C.Agardh) Harvey, 1853
55. Species Lomentaria irregularis Zanardini, 1851 accepted as Champia irregularis (Zanardini) Piccone, 1884
56. Species Lomentaria kaliformis (Goodenough & Woodward) Areschoug, 1847 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928
57. Species Lomentaria kotschyana (Endlicher & Diesing) J.Agardh, 1852 accepted as Champia kotschyana Endlicher & Diesing, 1854
58. Species Lomentaria linearis (Zanardini) Zanardini, 1849 accepted as Lomentaria articulata var. linearis Zanardini, 1841 (synonym)
59. Species Lomentaria mediterranea Endlicher accepted as Gastroclonium clavatum (Roth) Ardissone, 1883
60. Species Lomentaria muelleri Sonder, 1853 accepted as Coelarthrum opuntia (Endlicher) Børgesen, 1937
61. Species Lomentaria opuntia (Endlicher) J.Agardh, 1852 accepted as Coelarthrum opuntia (Endlicher) Børgesen, 1937
62. Species Lomentaria opuntia (Goodenough & Woodward) Gaillon, 1828 accepted as Catenella caespitosa (Withering) L.M.Irvine, 1976 (synonym)
63. Species Lomentaria ovata (J.V.Lamouroux) Gaillon, 1828 accepted as Claviclonium ovatum (J.V.Lamouroux) Kraft & Min-Thein, 1983
64. Species Lomentaria parvula (C.Agardh) Zanardini, 1841 accepted as Champia parvula (C.Agardh) Harvey, 1853
65. Species Lomentaria patens Kützing, 1843 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928
66. Species Lomentaria phalligera (J.Agardh) Endlicher, 1843 accepted as Lomentaria articulata var. linearis Zanardini, 1841 (synonym)
67. Species Lomentaria pusilla De Notaris ex Kützing, 1849 accepted as Laurencia nana (C.Agardh) Greville, 1830 (synonym)
68. Species Lomentaria pygmaea (J.V.Lamouroux) Gaillon, 1828 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928
69. Species Lomentaria pygmaea Duby, 1830 accepted as Gastroclonium reflexum (Chauvin) Kützing, 1849
70. Species Lomentaria ramsayana (J.Agardh) Kylin, 1931 accepted as Lomentaria catenata Harvey, 1857 accepted as Fushitsunagia catenata (Harvey) Filloramo & G.W.Saunders, 2016 (synonym)
71. Species Lomentaria reflexa Chauvin, 1831 accepted as Gastroclonium reflexum (Chauvin) Kützing, 1849 (synonym)
72. Species Lomentaria rosea (Harvey) Thuret, 1863 accepted as Lomentaria orcadensis (Harvey) Collins, 1937
73. Species Lomentaria sedifolia (Turner) Strömfelt ex Foslie, 1894 accepted as Lomentaria clavellosa (Lightfoot ex Turner) Gaillon, 1828
74. Species Lomentaria sinensis M.Howe, 1924 accepted as Lomentaria hakodatensis Yendo, 1920
75. Species Lomentaria squarrosa Kützing, 1843 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (synonym)
76. Species Lomentaria tenera Ercegovic, 1956 accepted as Lomentaria ercegovicii Verlaque, Boudouresque, Meinesz, Giraud & Marcot Coqueugniot, 1977
77. Species Lomentaria torulosa Kützing, 1843 accepted as Chylocladia torulosa (Kützing) Dizerbo, 2007 (synonym)
78. Species Lomentaria uvaria (J.A.Murray) Duby, 1830 accepted as Botryocladia botryoides (Wulfen) Feldmann, 1941 (synonym)
79. Species Lomentaria valida Kützing, 1865 accepted as Coelarthrum opuntia (Endlicher) Børgesen, 1937 (synonym)
80. Species Lomentaria veneta Zanardini, 1847 accepted as Gastroclonium reflexum (Chauvin) Kützing, 1849 (synonym)
81. Species Lomentaria zonata J.Agardh, 1852 accepted as Champia zonata (J.Agardh) J.Agardh, 1876
82. Species Lomentaria zostericola Harvey, 1855 accepted as Champia zostericola (Harvey) Reedman & Womersley, 1976
83. Species Lomentaria brachyarkeana Zanardini, 1854 (uncertain, uncertain taxonomic status subjected to verification)
84. Species Lomentaria corymbosa Zanardini, 1888 (uncertain, uncertain taxonomic status subjected to verification)
85. Species Lomentaria exigua De Notaris, 1841 (uncertain)
86. Species Lomentaria implexa De Toni & Levi, 1888 (uncertain, uncertain taxonomic status subjected to verification)
87. Species Lomentaria intricata De Toni & Levi, 1888 (uncertain, uncertain taxonomic status subjected to verification)
88. Species Lomentaria liguistica Ardissone, 1875 (uncertain, uncertain taxonomic status subjected to verification)
89. Species Lomentaria pertusa Schousboe (uncertain)
90. Species Lomentaria prasina De Noraris, 1888 (uncertain, uncertain taxonomic status subjected to verification)
91. Species Lomentaria tenerrima (Esper) P.C.Silva, 1996 (uncertain)
92. Species Lomentaria uncinata Martens ex Kützing, 1849 (uncertain)

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