1. Species Pediastrum angulosum Ehrenberg ex Meneghini, 1840
2. Species Pediastrum argentinense Bourrelly & Tell, 1979
3. Species Pediastrum bareilliense I.Habib, U.K.Chaturvedi & U.C.Pandey, 1991
4. Species Pediastrum berolinense E.Hegewald, 2005
5. Species Pediastrum bifidites L.R.Wilson & Hoffmeister, 1953 †
6. Species Pediastrum bijuga
7. Species Pediastrum bisnupurense Keshri & P.Mallick, 2013
8. Species Pediastrum biwae Negoro, 1954
9. Species Pediastrum bobyensis Kant & P.Gupta, 1998
10. Species Pediastrum braunii Wartmann, 1862
11. Species Pediastrum contiguum P.González, 1940
12. Species Pediastrum cruciatum Haeckel
13. Species Pediastrum delicatites L.R.Wilson & Hoffmeister, 1953 †
14. Species Pediastrum diffusum H.P.Singh & A.K.Khanna, 1976 †
15. Species Pediastrum duplex Meyen, 1829
16. Species Pediastrum elegans Hassall
17. Species Pediastrum elegans Haeckel
18. Species Pediastrum ellipticum Ehrenberg ex Ralfs, 1848
19. Species Pediastrum forcipatum (Corda) Braun
20. Species Pediastrum incisum
21. Species Pediastrum inconspicuum Kant & P.Gupta, 1998
22. Species Pediastrum integrum Nägeli, 1849
23. Species Pediastrum janaktalense S.P.Sharma, Saksena & M.S.Agarkar, 1985
24. Species Pediastrum kajaites L.R.Wilson & Hoffmeister, 1953 †
25. Species Pediastrum lehense Kant & P.Gupta, 1998
26. Species Pediastrum leonensis Tell & M.C.Zamaloa, 2004 †
27. Species Pediastrum lobatum
28. Species Pediastrum longicorne Kant & P.Gupta, 1998
29. Species Pediastrum magnum H.P.Singh & A.K.Khanna, 1976 †
30. Species Pediastrum marvillense Thérézien & Couté ex Parra Barrientos
31. Species Pediastrum marvillense Thérézien & Couté ex Parra Barrientos, 1979
32. Species Pediastrum musterii Tell & G.Mataloni, 1990
33. Species Pediastrum obtusum Lucks, 1907
34. Species Pediastrum orbitale Komárek, 1983
35. Species Pediastrum orientale (Skuja) V.Jankovská & J.Komárek, 1995
36. Species Pediastrum paleogeneites L.R.Wilson & Hoffmeister, 1953 †
37. Species Pediastrum pallidum H.P.Singh & A.K.Khanna, 1976 †
38. Species Pediastrum patagonicum Tell & G.Mataloni, 1990
39. Species Pediastrum polydens Morozova-Vodyanitskaya, 1925
40. Species Pediastrum praecox Morozova-Vodyanitskaya, 1925
41. Species Pediastrum sarmae Keshri & P.Mallick, 2013
42. Species Pediastrum schroeteri Lemmermann
43. Species Pediastrum sculptatum G.M.Smith, 1916
44. Species Pediastrum spinosum Kant & P.Gupta, 1998
45. Species Pediastrum subgranulatum (Raciborski) J.Komárek & V.Jankovsk, 2001
46. Species Pediastrum taylorii Sieminska, 1965
47. Species Pediastrum tetraodon (Corda) A.Braun
48. Species Pediastrum tetrapodum Morozova-Vodyanitskaya, 1925
49. Species Pediastrum tetrax
50. Species Pediastrum tricuspidatum Conrad, 1949
51. Species Pediastrum tricyclia (Ehrenberg) Corda
52. Species Pediastrum tricyclium Hassall ex Ralfs
53. Species Pediastrum trochiscus Haeckel
54. Species Pediastrum undulatum (Wille) Boldt
55. Species Pediastrum vagum Kützing
56. Species Pediastrum westii Woloszynska
57. Species Pediastrum wilsonii H.P.Singh & A.K.Khanna, 1976 †
58. Species Pediastrum wintonense Croome & Fabbro, 2005
59. Species Pediastrum alternans Nygaard, 1950 accepted as Pseudopediastrum alternans (Nygaard) M.Jena & C.Bock, 2014
60. Species Pediastrum araneosum (Raciborski) G.M.Smith, 1916 accepted as Pediastrum angulosum Ehrenberg ex Meneghini, 1840 (synonym)
61. Species Pediastrum asperum Braun, 1855 accepted as Pediastrum pertusum Kützing, 1845 accepted as Pediastrum duplex Meyen, 1829
62. Species Pediastrum asymmetricum T.Yamagishi & E.Hegewald, 1994 accepted as Monactinus asymmetricus (Yamagishi & E.Hegewald) E.Hegewald, 2005 (synonym)
63. Species Pediastrum bidentulum A.Braun, 1885 accepted as Pediastrum boryanum (Turpin) Meneghini, 1840 accepted as Pseudopediastrum boryanum (Turpin) E.Hegewald, 2005 (synonym)
64. Species Pediastrum biradiatum Meyen, 1829 accepted as Parapediastrum biradiatum (Meyen) E.Hegewald, 2005 (synonym)
65. Species Pediastrum boryanum (Turpin) Meneghini, 1840 accepted as Pseudopediastrum boryanum (Turpin) E.Hegewald, 2005 (synonym)
66. Species Pediastrum brachylobum Braun, 1855 accepted as Pediastrum duplex Meyen, 1829
67. Species Pediastrum braunianum Grunow, 1859 accepted as Pediastrum integrum var. braunianum (Grunow) Nordsted, 1878
68. Species Pediastrum clathratum (Schröder) Lemmermann, 1897 accepted as Pediastrum simplex Meyen, 1829 accepted as Monactinus simplex (Meyen) Corda, 1839 (synonym)
69. Species Pediastrum conchense P.González, 1940 accepted as Pediastrum glanduliferum A.W.Bennett, 1892 accepted as Pediastrum boryanum var. longicorne (Reinsch) Hansgirg, 1867 accepted as Pseudopediastrum boryanum var. longicorne (Reinsch) Tsarenko, 2011 (synonym)
70. Species Pediastrum constrictum Hassall, 1845 accepted as Pediastrum boryanum (Turpin) Meneghini, 1840 accepted as Pseudopediastrum boryanum (Turpin) E.Hegewald, 2005 (synonym)
71. Species Pediastrum cornutum (Raciborski) O.V.Troitskaya, 1933 accepted as Pseudopediastrum cornutum (Raciborski) Lenarczyk, 2020
72. Species Pediastrum cruciatum Kützing, 1845 accepted as Pediastrum boryanum (Turpin) Meneghini, 1840 accepted as Pseudopediastrum boryanum (Turpin) E.Hegewald, 2005 (synonym)
73. Species Pediastrum crux-melitensis (Corda) A.Braun, 1855 accepted as Stauridium tetras (Ehrenberg) E.Hegewald, 2005
74. Species Pediastrum duodenarium (J.W.Bailey) Archer accepted as Pediastrum simplex var. duodenarium (J.W.Bailey) Rabenhorst, 1862 accepted as Pediastrum simplex Meyen, 1829 accepted as Monactinus simplex (Meyen) Corda, 1839 (synonym)
75. Species Pediastrum ehrenbergii (Corda) Braun, 1855 accepted as Pediastrum tetras (Ehrenberg) Ralfs, 1845 accepted as Stauridium tetras (Ehrenberg) E.Hegewald, 2005 (synonym)
76. Species Pediastrum enoplon West & G.S.West, 1895 accepted as Pediastrum simplex Meyen, 1829 accepted as Monactinus simplex (Meyen) Corda, 1839 (synonym)
77. Species Pediastrum forcipatum (Corda) A.Braun, 1855 accepted as Pediastrum boryanum var. forcipatum (Corda) Chodat, 1902
78. Species Pediastrum glanduliferum A.W.Bennett, 1892 accepted as Pediastrum boryanum var. longicorne (Reinsch) Hansgirg, 1867 accepted as Pseudopediastrum boryanum var. longicorne (Reinsch) Tsarenko, 2011 (synonym)
79. Species Pediastrum gracile A.Braun accepted as Pediastrum duplex var. gracillimum West & G.S.West, 1895 accepted as Lacunastrum gracillimum (West & G.S. West) H.McManus, 2011 (synonym)
80. Species Pediastrum gracillimum (West & G.S.West) Thunmark, 1945 accepted as Lacunastrum gracillimum (West & G.S. West) H.McManus, 2011 (synonym)
81. Species Pediastrum granulatum Kützing, 1845 accepted as Pediastrum boryanum (Turpin) Meneghini, 1840 accepted as Pseudopediastrum boryanum (Turpin) E.Hegewald, 2005 (synonym)
82. Species Pediastrum haynaldii Istvanfy, 1887 accepted as Pediastrum angulosum var. haynaldii (Istvanfy) Raciborski
83. Species Pediastrum incavatum W.B.Turner, 1893 accepted as Pediastrum tetras (Ehrenberg) Ralfs, 1845 accepted as Stauridium tetras (Ehrenberg) E.Hegewald, 2005
84. Species Pediastrum kawraiskyi Schmidle, 1897 accepted as Pseudopediastrum kawraiskyi (Schmidle) E.Hegewald, 2005 (synonym)
85. Species Pediastrum longicornutum (Gutwinski) A.Comas, 1989 accepted as Parapediastrum biradiatum var. longecornutum (Gutwinski) Tsarenko, 2011 (synonym)
86. Species Pediastrum muticum Kützing, 1849 accepted as Pseudopediastrum brevicorne (A.Braun) M.Jena & C.Bock, 2014 (synonym)
87. Species Pediastrum napoleonis Ralfs accepted as Pediastrum duplex Meyen, 1829 (synonym)
88. Species Pediastrum obtusangulum Perty, 1852 accepted as Pediastrum tetras (Ehrenberg) Ralfs, 1845 accepted as Stauridium tetras (Ehrenberg) E.Hegewald, 2005
89. Species Pediastrum ovatum (Ehrenberg) A.Braun, 1855 accepted as Pediastrum simplex Meyen, 1829 accepted as Monactinus simplex (Meyen) Corda, 1839
90. Species Pediastrum pearsonii G.S.West, 1912 accepted as Pseudopediastrum pearsonii (G.S.West) M.Jena & C.Bock, 2014
91. Species Pediastrum pertusum Kützing, 1845 accepted as Pediastrum duplex Meyen, 1829 (synonym)
92. Species Pediastrum privum (Printz) Hegewald, 1979 accepted as Stauridium privum (Printz) Hegewald, 2005
93. Species Pediastrum quadratum (Morren) Meneghini, 1840 accepted as Crucigenia quadrata Morren, 1830
94. Species Pediastrum quadricornutum Prescott, 1944 accepted as Pediastrum obtusum Lucks, 1907
95. Species Pediastrum rotula (Ehrenberg) Kützing, 1845 accepted as Pediastrum biradiatum Meyen, 1829 accepted as Parapediastrum biradiatum (Meyen) E.Hegewald, 2005 (synonym)
96. Species Pediastrum selenaea Kützing, 1845 accepted as Pediastrum duplex Meyen, 1829 (synonym)
97. Species Pediastrum serratum Reinsch, 1866 accepted as Pseudopediastrum boryanum (Turpin) E.Hegewald, 2005
98. Species Pediastrum simplex Meyen, 1829 accepted as Monactinus simplex (Meyen) Corda, 1839 (synonym)
99. Species Pediastrum sturmii Reinsch, 1867 accepted as Monactinus simplex var. sturmii (Reinsch) Pérez, Maidana & Comas, 2009 (synonym)
100. Species Pediastrum tetraodon (Corda) A.Braun, 1855 accepted as Stauridium tetras var. tetraodon (Corda) J.D.Hall & Karol, 2016
101. Species Pediastrum tetraodon Corda, 1839 accepted as Pediastrum biradiatum var. emarginatum (Ehrenberg) Lagerheim, 1882
102. Species Pediastrum tetras (Ehrenberg) Ralfs, 1845 accepted as Stauridium tetras (Ehrenberg) E.Hegewald, 2005 (synonym)
103. Species Pediastrum tricornutum Borge, 1892 accepted as Pediastrum braunii Wartmann, 1862 (synonym)
104. Species Pediastrum acantostephanos Sámano Bishop, 1932 (uncertain)
105. Species Pediastrum acutilobium Corda (uncertain)
106. Species Pediastrum acutilobum Corda, 1839 (uncertain)
107. Species Pediastrum acutum Corda, 1839 (uncertain)
108. Species Pediastrum bijugum No authority known (uncertain, uncertain taxonomic status subjected to verification)
109. Species Pediastrum caudatum Braun, 1855 (uncertain)
110. Species Pediastrum coelastroides Wołoszyńska, 1914 (uncertain)
111. Species Pediastrum compactum A.W.Bennett, 1886 (uncertain)
112. Species Pediastrum darwinii Haeckel, 1899 (uncertain)
113. Species Pediastrum diodon Corda, 1839 (uncertain)
114. Species Pediastrum duodenarium (Bailey) Archer (uncertain)
115. Species Pediastrum emarginatum Kützing, 1849 (uncertain)
116. Species Pediastrum furcatum Haeckel, 1899 (uncertain)
117. Species Pediastrum habibii Habib & Chaturvedi, 1992 (uncertain, uncertain taxonomic status subjected to verification)
118. Species Pediastrum heimii Bourrelly, 1940 (uncertain)
119. Species Pediastrum heptactis (Ehrenberg) Meneghini, 1840 (uncertain)
120. Species Pediastrum hexactis (Ehrenberg) Jenner, 1845 (uncertain)
121. Species Pediastrum irregulare Corda, 1835 (uncertain)
122. Species Pediastrum lunatum Haeckel, 1899 (uncertain)
123. Species Pediastrum mirabile Lemmermann, 1895 (uncertain)
124. Species Pediastrum octonum Haeckel, 1899 (uncertain)
125. Species Pediastrum quadrangulum Corda, 1835 (uncertain)
126. Species Pediastrum renicarpum (Turpin) Corda, 1839 (uncertain)
127. Species Pediastrum reticulatum (Lagerh.) Zacharias, 1898 (uncertain)
128. Species Pediastrum solare Haeckel, 1899 (uncertain)
129. Species Pediastrum sorastroides Wołoszyńska, 1914 (uncertain)
130. Species Pediastrum speciosum (Losana) Parra Barrientos, 1979 (uncertain)
131. Species Pediastrum subuliferum Kützing (uncertain)
132. Species Pediastrum triangulum (Ehrenberg) Braun (uncertain)
133. Species Pediastrum triangulum (Ehrenberg) A.Braun (uncertain)
134. Species Pediastrum triplex Sharma, Saksena & Agarkar (uncertain)
135. Species Pediastrum willei Comas Gonzalez, Perez Baliero & Rio Rams, 2006 (uncertain)

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