1. Subgenus Sphacelaria (Sphacelaria)
   1. Species Sphacelaria (Sphacelaria) radicans (Dillwyn) C. Agardh, 1824 represented as Sphacelaria radicans (Dillwyn) C.Agardh, 1824 accepted as Protohalopteris radicans (Dillwyn) Draisma, Prud'homme & H.Kawai, 2010
   2. Species Sphacelaria (Sphacelaria) reticulata Lyngbye, 1818 represented as Sphacelaria reticulata Lyngbye, 1818
2. Species Sphacelaria affinis Dickie, 1876
3. Species Sphacelaria australis Kützing
4. Species Sphacelaria axilaris Takamatsu, 1943
5. Species Sphacelaria bertiana De Notaris
6. Species Sphacelaria biradiata Askenasy, 1894
7. Species Sphacelaria brachygonia Montagne, 1843
8. Species Sphacelaria brevicornis Setchell & N.L.Gardner, 1924
9. Species Sphacelaria californica (Sauvageau) Setchell & N.L.Gardener, 1925
10. Species Sphacelaria capensis Kützing, 1849
11. Species Sphacelaria carolinensis Trono, 1972
12. Species Sphacelaria cervicornis C.Agardh, 1827
13. Species Sphacelaria ceylanica Sauvageau, 1901
14. Species Sphacelaria cirrosa (Roth) C.Agardh, 1824
15. Species Sphacelaria cornuta Sauvageau, 1901
16. Species Sphacelaria crassa C.Agardh, 1824
17. Species Sphacelaria didichotoma De A.Saunders, 1898
18. Species Sphacelaria fluviatilis C.-C.Jao, 1943
19. Species Sphacelaria fusca (Hudson) S.F.Gray, 1821
20. Species Sphacelaria indica Reinke, 1891
21. Species Sphacelaria isocnema Kraft, 2009
22. Species Sphacelaria kovalamensis V.Krishnamurthy & Baluswami, 1992
23. Species Sphacelaria lacustris Schloesser & Blum, 1980
24. Species Sphacelaria limicola Lindauer, 1960
25. Species Sphacelaria lutea Takamatsu, 1943
26. Species Sphacelaria masonii Setchell & N.L.Gardner, 1930
27. Species Sphacelaria nipponica Kitayama, 1994
28. Species Sphacelaria novae-caledoniae Savageau, 1901
29. Species Sphacelaria novae-hollandiae Sonder, 1845
30. Species Sphacelaria plumula Zanardini, 1864
31. Species Sphacelaria recurva Y.-S.Keum, J.H.Oak, Prud'homme van Reine & I.K.Lee, 2001
32. Species Sphacelaria reticulata Lyngbye, 1818
33. Species Sphacelaria rigidula Kützing, 1843
34. Species Sphacelaria sauvageaui Weber-van Bosse, 1913
35. Species Sphacelaria sessilis Takamatsu, 1943
36. Species Sphacelaria solitaria (Pringsheim) Kylin, 1947
37. Species Sphacelaria stewartensis Lindauer, 1949
38. Species Sphacelaria taitensis Setchell, 1926
39. Species Sphacelaria tribuloides Meneghini, 1840
40. Species Sphacelaria yamadae Segawa, 1941
41. Species Sphacelaria apicalis Takamatsu, 1943 accepted as Sphacelaria rigidula Kützing, 1843
42. Species Sphacelaria arctica Harvey, 1858 accepted as Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
43. Species Sphacelaria bipinnata (Kützing) Piccone, 1884 accepted as Sphacelaria cirrosa (Roth) C.Agardh, 1824
44. Species Sphacelaria bornetii Hariot, 1887 accepted as Herpodiscus bornetii (Hariot) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
45. Species Sphacelaria botryoclada J.D.Hooker & Harvey accepted as Ptilopogon botryocladus (J.D.Hooker & Harvey) Reinke, 1890
46. Species Sphacelaria brachygona Montagne accepted as Sphacelaria brachygonia Montagne, 1843 (misspelling)
47. Species Sphacelaria bracteata (Reinke) Sauvageau, 1900 accepted as Herpodiscus bracteatus (Reinke) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
48. Species Sphacelaria britannica Sauvageau, 1901 accepted as Sphacelaria nana Nägeli ex Kützing, 1855 accepted as Sphacelorbus nanus (Nageli ex Kützing) Draisma, Prud'homme & H.Kawai, 2010
49. Species Sphacelaria caespitosa Takamatsu, 1943 accepted as Sphacelaria rigidula Kützing, 1843
50. Species Sphacelaria caespitula Lyngbye, 1819 accepted as Sphaceloderma caespitulum (Lyngbye) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
51. Species Sphacelaria callitricha C.Agardh, 1824 accepted as Ballia callitricha (C.Agardh) Kützing, 1843
52. Species Sphacelaria carpoglossi Womersley, 1967 accepted as Herpodiscus carpoglossi (Womersley) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
53. Species Sphacelaria chorizocarpa Sauvageau, 1900 accepted as Herpodiscus chorizocarpus (Sauvageau) S.G.A.Draisma, W.F.Prud'homme van Reine & H.Kawai, 2014
54. Species Sphacelaria clevei Grunow, 1874 accepted as Sphacelaria arctica Harvey, 1858 accepted as Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010
55. Species Sphacelaria corymbosa Dickie, 1876 accepted as Halopteris corymbosa (Dickie) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
56. Species Sphacelaria cupressina Harvey, 1834 accepted as Tolypiocladia glomerulata (C.Agardh) F.Schmitz, 1897
57. Species Sphacelaria disticha Vahl ex Lyngbye, 1819 accepted as Halopteris filicina (Grateloup) Kützing, 1843
58. Species Sphacelaria divaricata Montagne, 1849 accepted as Sphacelaria rigidula Kützing, 1843
59. Species Sphacelaria dura Ruprecht, 1850 accepted as Stypocaulon durum (Ruprecht) Okamura, 1902 accepted as Halopteris dura (Ruprecht) Perestenko, 1980
60. Species Sphacelaria elliptica Dickinson, 1952 accepted as Sphacelaria brachygonia Montagne, 1843
61. Species Sphacelaria expansa Noda, 1969 accepted as Sphacelaria rigidula Kützing, 1843
62. Species Sphacelaria fasciculata Schousboe ex Sauvageau, 1902 accepted as Sphacelaria brachygonia Montagne, 1843
63. Species Sphacelaria filicina (Grateloup) C.Agardh, 1824 accepted as Halopteris filicina (Grateloup) Kützing, 1843
64. Species Sphacelaria foecunda Sauvageau, 1900 accepted as Sphacelaria bracteata (Reinke) Sauvageau, 1900 accepted as Herpodiscus bracteatus (Reinke) Draisma, Prud'homme & H.Kawai, 2010
65. Species Sphacelaria funicularis Montagne, 1842 accepted as Halopteris funicularis (Montagne) Sauvageau, 1904 (synonym)
66. Species Sphacelaria furcigera Kützing, 1855 accepted as Sphacelaria rigidula Kützing, 1843
67. Species Sphacelaria gracilescens Agardh, 1841 accepted as Halopteris gracilescens (J.Agardh) Womersley, 1967 accepted as Stypocaulon paniculatum (Suhr) Kützing, 1849 accepted as Halopteris paniculata (Suhr) Prud'homme, 1972 (synonym)
68. Species Sphacelaria hancockii E.Y.Dawson, 1944 accepted as Sphacelaria novae-hollandiae Sonder, 1845
69. Species Sphacelaria harveyana Sauvageau, 1902 accepted as Sphacelaria biradiata Askenasy, 1894
70. Species Sphacelaria helgolandica (Kuckuck) Waern, 1945 accepted as Sphacelaria caespitula Lyngbye, 1819 accepted as Sphaceloderma caespitulum (Lyngbye) Draisma, Prud'homme & H.Kawai, 2010
71. Species Sphacelaria heteronema Postels & Ruprecht, 1840 accepted as Sphacelaria plumosa Lyngbye, 1819 accepted as Chaetopteris plumosa (Lyngbye) Kützing, 1843
72. Species Sphacelaria hizikiae Ohta & Noda, 1984 accepted as Sphacelaria didichotoma De A.Saunders, 1898
73. Species Sphacelaria hordacea Harvey, 1844 accepted as Stypocaulon paniculatum (Suhr) Kützing, 1849 accepted as Halopteris paniculata (Suhr) Prud'homme, 1972
74. Species Sphacelaria hordeacea Harvey, 1844 accepted as Stypocaulon paniculatum (Suhr) Kützing, 1849 accepted as Halopteris paniculata (Suhr) Prud'homme, 1972
75. Species Sphacelaria hystrix Suhr ex Reinke accepted as Sphacelaria cirrosa (Roth) C.Agardh, 1824
76. Species Sphacelaria implicata Sauvageau, 1901 accepted as Herpodiscus implicatus (Sauvageau) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
77. Species Sphacelaria intermedia Gobi, 1877 accepted as Sphacelaria arctica Harvey, 1858 accepted as Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010
78. Species Sphacelaria iridaeophytica Nagai, 1932 accepted as Sphacelaria rigidula Kützing, 1843
79. Species Sphacelaria irregularis Kützing accepted as Sphacelaria cirrosa (Roth) C.Agardh, 1824
80. Species Sphacelaria iwagaskensis Noda, 1970 accepted as Sphacelaria rigidula Kützing, 1843
81. Species Sphacelaria linearis Takamatsu, 1943 accepted as Sphacelaria rigidula Kützing, 1843
82. Species Sphacelaria mexicana W.R.Taylor, 1945 accepted as Sphacelaria tribuloides Meneghini, 1840 (synonym)
83. Species Sphacelaria mirabilis (Reinke ex Batters) Prud''homme van Reine, 1982 accepted as Battersia mirabilis Reinke ex Batters, 1890 (synonym)
84. Species Sphacelaria muelleri Sonder, 1855 accepted as Stypocaulon funiculare (Montagne) Kützing, 1849 accepted as Halopteris funicularis (Montagne) Sauvageau, 1904
85. Species Sphacelaria multiplex Womersley, 1987 accepted as Herpodiscus multiplex (Womersley) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
86. Species Sphacelaria nana Nägeli ex Kützing, 1855 accepted as Sphacelorbus nanus (Nageli ex Kützing) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
87. Species Sphacelaria norrisii Hollenberg, 1969 accepted as Battersia norrisii (Hollenberg) Gabrielson, Lindstrom & O'Kelly, 2012 (synonym)
88. Species Sphacelaria notata (C.Agardh) Kjellman, 1890 accepted as Sphacelaria arctica Harvey, 1858 accepted as Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010
89. Species Sphacelaria obaidii Aisha & M.Shameel, 2012 accepted as Sphacelaria saifullahii Aisha & Shameel, 2012 (synonym)
90. Species Sphacelaria obovata J.D.Hooker & Harvey, 1845 accepted as Halopteris obovata (J.D.Hooker & Harvey) Sauvageau, 1904
91. Species Sphacelaria olivacea Pringsheim accepted as Sphacelaria nana Nägeli ex Kützing, 1855 accepted as Sphacelorbus nanus (Nageli ex Kützing) Draisma, Prud'homme & H.Kawai, 2010 (basionym)
92. Species Sphacelaria olivacea (Dillwyn) Greville, 1824 accepted as Sphacelaria radicans (Dillwyn) C.Agardh, 1824 accepted as Protohalopteris radicans (Dillwyn) Draisma, Prud'homme & H.Kawai, 2010
93. Species Sphacelaria paniculata Suhr, 1840 accepted as Stypocaulon paniculatum (Suhr) Kützing, 1849 accepted as Halopteris paniculata (Suhr) Prud'homme, 1972
94. Species Sphacelaria pennata Lyngbye, 1819 accepted as Sphacelaria cirrosa (Roth) C.Agardh, 1824
95. Species Sphacelaria plumigera Holmes ex Hauck, 1884 accepted as Battersia plumigera (Holmes ex Hauck) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
96. Species Sphacelaria plumosa Lyngbye, 1819 accepted as Chaetopteris plumosa (Lyngbye) Kützing, 1843 (synonym)
97. Species Sphacelaria prostrata Takamatsu, 1943 accepted as Sphacelaria didichotoma De A.Saunders, 1898
98. Species Sphacelaria pulvinata J.D.Hooker & Harvey, 1855 accepted as Herpodiscus pulvinatus (J.D.Hooker & Harvey) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
99. Species Sphacelaria pygmaea Lenormand ex Sauvageau, 1900 accepted as Sphacelaria bracteata (Reinke) Sauvageau, 1900 accepted as Herpodiscus bracteatus (Reinke) Draisma, Prud'homme & H.Kawai, 2010
100. Species Sphacelaria pyriformis Noda, 1975 accepted as Sphacelaria yamadae Segawa, 1941
101. Species Sphacelaria racemosa Greville, 1824 accepted as Battersia racemosa (Greville) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
102. Species Sphacelaria radiata Takamatsu, 1943 accepted as Sphacelaria yamadae Segawa, 1941
103. Species Sphacelaria radicans (Dillwyn) C.Agardh, 1824 accepted as Protohalopteris radicans (Dillwyn) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
104. Species Sphacelaria reinkei Sauvageau, 1900 accepted as Herpodiscus reinkei (Sauvageau) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
105. Species Sphacelaria rhizophora Kützing accepted as Sphacelaria cirrosa (Roth) C.Agardh, 1824
106. Species Sphacelaria rigida Hering, 1846 accepted as Sphacelaria tribuloides Meneghini, 1840
107. Species Sphacelaria saxatilis (Kuckuck) Kuckuck ex Sauvageau, 1900 accepted as Sphacelaria nana Nägeli ex Kützing, 1855 accepted as Sphacelorbus nanus (Nageli ex Kützing) Draisma, Prud'homme & H.Kawai, 2010
108. Species Sphacelaria scoparia (Linnaeus) Lyngbye, 1819 accepted as Halopteris scoparia (Linnaeus) Sauvageau, 1904
109. Species Sphacelaria scoparioides Lyngbye, 1819 accepted as Stypocaulon scoparium (Linnaeus) Kützing, 1843 accepted as Halopteris scoparia (Linnaeus) Sauvageau, 1904
110. Species Sphacelaria sertularia Bonnemaison, 1828 accepted as Halopteris filicina (Grateloup) Kützing, 1843 (synonym)
111. Species Sphacelaria shiiyaensis Noda, 1974 accepted as Sphacelaria solitaria (Pringsheim) Kylin, 1947
112. Species Sphacelaria spartioides Meneghini, 1840 accepted as Stypocaulon spartioides (Meneghini) Meneghini ex Kützing, 1849 (synonym)
113. Species Sphacelaria spicigera J.E. Areschoug, 1854 accepted as Stypocaulon paniculatum (Suhr) Kützing, 1849 accepted as Halopteris paniculata (Suhr) Prud'homme, 1972 (synonym)
114. Species Sphacelaria spinulosa Lyngbye, 1819 accepted as Stypocaulon scoparium (Linnaeus) Kützing, 1843 accepted as Halopteris scoparia (Linnaeus) Sauvageau, 1904
115. Species Sphacelaria spuria Sauvageau, 1900 accepted as Herpodiscus spurius (Sauvageau) Draisma, Prud'homme & H.Kawai, 2010 (synonym)
116. Species Sphacelaria squamulosa Suhr, 1834 accepted as Phloiocaulon squamulosum (Suhr) Geyler, 1866
117. Species Sphacelaria subfusca Setchell & N.L.Gardner, 1924 accepted as Sphacelaria fusca (Hudson) S.F.Gray, 1821
118. Species Sphacelaria sympodiocarpa Sauvageau, 1900 accepted as Herpodiscus sympodiocarpus (Sauvageau) S.G.A.Draisma, W.F.Prud'homme van Reine & H.Kawai, 2010 (synonym)
119. Species Sphacelaria tenuis Takamatsu, 1943 accepted as Sphacelaria divaricata Montagne, 1849 accepted as Sphacelaria rigidula Kützing, 1843
120. Species Sphacelaria tsengii Draisma, Keum, Prud'homme & Lokhorst, 1998 accepted as Sphacelaria cornuta Sauvageau, 1901
121. Species Sphacelaria variabilis Sauvageau, 1901 accepted as Sphacelaria rigidula Kützing, 1843
122. Species Sphacelaria velutina Greville, 1828 accepted as Herponema velutinum (Greville) J.Agardh, 1890
123. Species Sphacelaria virgata J.D.Hooker & Harvey, 1845 accepted as Halopteris virgata (J.D.Hooker & Harvey) N.M.Adams, 1994
124. Species Sphacelaria viridis Takamatsu, 1943 accepted as Sphacelaria solitaria (Pringsheim) Kylin, 1947
125. Species Sphacelaria hashmatii Aisha & Shameel, 2012 (uncertain)
126. Species Sphacelaria minuta C.Agardh, 1824 (uncertain)
127. Species Sphacelaria nizamuddinii Aisha & Shameel, 2012 (uncertain)
128. Species Sphacelaria pilifera Reinsch, 1875 (uncertain, uncertain taxonomic status subjected to verification)
129. Species Sphacelaria pumila C.Agardh, 1827 (uncertain)
130. Species Sphacelaria saifullahii Aisha & Shameel, 2012 (uncertain)

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