1. Species Rhizosolenia acicularis B.G.Sundström, 1986
2. Species Rhizosolenia acuminata (H.Peragallo) H.Peragallo, 1907
3. Species Rhizosolenia acuminata (H.Peragallo) Gran, 1905
4. Species Rhizosolenia antennata (Ehrenberg) N.E.Brown, 1920
5. Species Rhizosolenia bergonii H.Peragallo, 1892
6. Species Rhizosolenia borealis B.G.Sundström, 1986
7. Species Rhizosolenia calcar-avis Schultze, 1858
8. Species Rhizosolenia castracanei H.Peragallo, 1888
9. Species Rhizosolenia curvata Zacharias, 1905
10. Species Rhizosolenia decipiens B.G.Sundström, 1986
11. Species Rhizosolenia fallax B.G.Sundström, 1986
12. Species Rhizosolenia formosa H.Peragallo, 1888
13. Species Rhizosolenia fragillima H.H.Gran
14. Species Rhizosolenia hebatata
15. Species Rhizosolenia hebetata Bailey, 1856
16. Species Rhizosolenia imbricata Brightwell, 1858
17. Species Rhizosolenia longiseta O.Zacharias, 1893
18. Species Rhizosolenia ostenfeldii B.G.Sundström, 1986
19. Species Rhizosolenia phuketensis B.G.Sundström, 1980
20. Section Rhizosolenia Pseudosetigera Medlin in Medlin et al., 2021
21. Species Rhizosolenia simplex Karsten, 1905
22. Species Rhizosolenia styliformis T.Brightwell, 1858
23. Species Rhizosolenia temperei H.Peragallo, 1888
24. Species Rhizosolenia alata Brightwell, 1858 accepted as Proboscia alata (Brightwell) Sundström, 1986 (synonym)
25. Species Rhizosolenia antennula accepted as Rhizosolenia antennata (Ehrenberg) N.E.Brown, 1920 (spelling variation)
26. Species Rhizosolenia calcaravis M.Schultze, 1858 accepted as Rhizosolenia calcar-avis Schultze, 1858
27. Species Rhizosolenia eriensis H.L.Smith, 1872 accepted as Urosolenia eriensis (H.L.Smith) Round & R.M.Crawford, 1990 accepted as Rhizosolenia eriensis f. eriensis H.L. Smith, 1872 (basionym)
28. Species Rhizosolenia fragilissima Bergon, 1903 accepted as Dactyliosolen fragilissimus (Bergon) Hasle, 1996 accepted as Rhizosolenia fragilissima f. fragilissima Bergon, 1903
29. Species Rhizosolenia pungens Cleve-Euler, 1937 represented as Sundstroemia pungens (Cl.-Euler) Medlin, Lundholm, Boonprakob, Moestrup in Medlin et al., 2021
30. Species Rhizosolenia setigera Brightwell, 1858 represented as Sundstroemia setigera (Brightwell) Medlin in Medlin et al., 2021
31. Species Rhizosolenia similoides Cleve-Euler, 1951 represented as Sundstroemia similoides (Cl.-Euler) Medlin, Lundholm, Boonprakob & Moestrup in Medlin et al., 2021
32. Species Rhizosolenia africana Karsten, 1907 (uncertain > unassessed)
33. Species Rhizosolenia africana Woloszynska, 1914 (uncertain > unassessed)
34. Species Rhizosolenia alata (H. Peragallo) Margalef & Durán, 1953 accepted as Rhizosolenia indica H.Peragallo, 1892 (uncertain > unassessed)
35. Species Rhizosolenia americana Ehrenberg, 1843 (uncertain > unassessed)
36. Species Rhizosolenia amputata Ostenfeld, 1902 (uncertain > unassessed)
37. Species Rhizosolenia annulata Karsten, 1907 (uncertain > unassessed)
38. Species Rhizosolenia antarctica Karsten, 1905 (uncertain > unassessed)
39. Species Rhizosolenia antarctica Fenner, 1984 (uncertain > unassessed)
40. Species Rhizosolenia antarctica Stolterfoth, 1898 (uncertain > unassessed)
41. Species Rhizosolenia arafurensis Castracane, 1886 (uncertain > unassessed)
42. Species Rhizosolenia arafurensis Wood, 1963 (uncertain > unassessed)
43. Species Rhizosolenia atlantica H. Peragallo, 1892 (uncertain > unassessed)
44. Species Rhizosolenia barbata Ehrenberg, 1844 (uncertain > unassessed)
45. Species Rhizosolenia barboi J.-J.Brun (uncertain > unassessed)
46. Species Rhizosolenia bella Jousé, 1973 (uncertain > unassessed)
47. Species Rhizosolenia bezrukovii Jousé, 1978 (uncertain > unassessed)
48. Species Rhizosolenia bidens Karsten, 1905 (uncertain > unassessed)
49. Species Rhizosolenia bifrons Jousé, 1960 (uncertain > unassessed)
50. Species Rhizosolenia blavyana (H.Peragallo) E.Steemann Nielsen accepted as Guinardia blavyana var. blavyana H. Peragallo, 1892 (uncertain > unassessed)
51. Species Rhizosolenia braunii Hustedt, 1952 (uncertain > unassessed)
52. Species Rhizosolenia bulbosa Schrader in Schrader & Fenner, 1976 (uncertain > unassessed)
53. Species Rhizosolenia calcar avis Schultze, 1858 (uncertain > unassessed)
54. Species Rhizosolenia calyptra Ehrenberg, 1844 (uncertain > unassessed)
55. Species Rhizosolenia campana Ehrenberg, 1844 (1845) (uncertain > unassessed)
56. Species Rhizosolenia capensis Fenner, 1994 (uncertain > unassessed)
57. Species Rhizosolenia carva Karsten, 1905 (uncertain > unassessed)
58. Species Rhizosolenia caspia Jousé, 1978 (uncertain > unassessed)
59. Species Rhizosolenia castracanei Cleve, 1889 (uncertain > unassessed)
60. Species Rhizosolenia chunii Karsten, 1905 (uncertain > unassessed)
61. Species Rhizosolenia clavigera (Grunow) Homann, 1991 accepted as Chaetoceros clavigerum Grunow, 1884 (uncertain > unassessed)
62. Species Rhizosolenia clevei Ostenfeld, 1902 (uncertain > unassessed)
63. Species Rhizosolenia cochlea Brun, 1891 (uncertain > unassessed)
64. Species Rhizosolenia comensis Zacharias (uncertain > unassessed)
65. Species Rhizosolenia corpulenta (Cleve) Cleve, 1900 accepted as Rhizosolenia alata var. corpulenta Cleve, 1897 (uncertain > unassessed)
66. Species Rhizosolenia costata Gersonde, 1991 (uncertain > unassessed)
67. Species Rhizosolenia crassa Schimper, 1905 (uncertain > unassessed)
68. Species Rhizosolenia crassa Hensen, 1911 (uncertain > unassessed)
69. Species Rhizosolenia crassispina Schroder, 1906 (uncertain > unassessed)
70. Species Rhizosolenia cretacea Hajós & Stradner in Hajós, 1974 (uncertain > unassessed)
71. Species Rhizosolenia curva Karsten, 1905 (uncertain > unassessed)
72. Species Rhizosolenia curvatulus Wood, 1963 (uncertain > unassessed)
73. Species Rhizosolenia curvicornis Hensen, 1911 (uncertain > unassessed)
74. Species Rhizosolenia curvirostris Jousé, 1968 (uncertain > unassessed)
75. Species Rhizosolenia curviseta Hustedt, 1942 (uncertain > unassessed)
76. Species Rhizosolenia cylindrus Cleve, 1897 (uncertain > unassessed)
77. Species Rhizosolenia cylindrus Ostenfeld in Ostenfeld & Knudsen, 1898 (1899) (uncertain > unassessed)
78. Species Rhizosolenia debyana H.Peragallo, 1892 (uncertain > unassessed)
79. Species Rhizosolenia debyana Gran, 1902 (uncertain > unassessed)
80. Species Rhizosolenia delicatula Cleve, 1900 (uncertain > unassessed)
81. Species Rhizosolenia delicatula Gran, 1902 (uncertain > unassessed)
82. Species Rhizosolenia delicatula Mereschkowsky, 1902 (uncertain > unassessed)
83. Species Rhizosolenia dubia (Grunow) Homann, 1991 accepted as Pyxilla dubia Grunow in Van Heurck, 1882 (uncertain > unassessed)
84. Species Rhizosolenia duplex J.W. Bailey ex H. Peragallo, 1892 (uncertain > unassessed)
85. Species Rhizosolenia eriensis (W. & G. S. West) Skabichevskii, 1960 (uncertain > unassessed)
86. Species Rhizosolenia eriensis Lavander, 1904 (uncertain > unassessed)
87. Species Rhizosolenia faeroensis Ostenfeld, 1903 (uncertain > unassessed)
88. Species Rhizosolenia fidicularis M.P. Olney in Olney et al., 2007 (uncertain > unassessed)
89. Species Rhizosolenia firma Karsten, 1907 (uncertain > unassessed)
90. Species Rhizosolenia flaccida Castracane, 1886 (uncertain > unassessed)
91. Species Rhizosolenia fragilis (Grunow) Fenner, 1994 accepted as Hemiaulus fragilis Grunow, 1884 (uncertain > unassessed)
92. Species Rhizosolenia fragillissima (uncertain > unassessed)
93. Species Rhizosolenia gigantea Hensen, 1911 (uncertain > unassessed)
94. Species Rhizosolenia gracilis H.L.Smith, 1882 (uncertain > unassessed)
95. Species Rhizosolenia gracillima Cleve, 1881 (uncertain > unassessed)
96. Species Rhizosolenia gravida Gombos & Ciesielski, 1983 (uncertain > unassessed)
97. Species Rhizosolenia guldbergiana Gran & Ruud, 1927 (uncertain > unassessed)
98. Species Rhizosolenia hastata Grunow in Cleve & Möller, 1879 (uncertain > unassessed)
99. Species Rhizosolenia hebetata (Hensen) Margalef, 1951 accepted as Rhizosolenia semispina Hensen, 1887 (uncertain > unassessed)
100. Species Rhizosolenia hemiaulus Hensen, 1911 (uncertain > unassessed)
101. Species Rhizosolenia hensenii Schütt, 1900 (uncertain > unassessed)
102. Species Rhizosolenia hiemalis Hensen, 1911 (uncertain > unassessed)
103. Species Rhizosolenia homanni Fenner, 1994 (uncertain > unassessed)
104. Species Rhizosolenia hotaense Akiba, 1980 (uncertain > unassessed)
105. Species Rhizosolenia hungarica M. Peragallo in Tempère & Peragallo, 1910 (uncertain > unassessed)
106. Species Rhizosolenia hyalina Ostenfeld, 1901 (uncertain > unassessed)
107. Species Rhizosolenia imbricata (Cleve) Margalef, 1951 accepted as Rhizosolenia shrubsolei Cleve, 1881 (uncertain > unassessed)
108. Species Rhizosolenia inaequalis F.S.Castracane degli Antelminelli (uncertain > unassessed)
109. Species Rhizosolenia indefinita Jouse & Koreneva, 1959 (uncertain > unassessed)
110. Species Rhizosolenia indica H.Peragallo, 1892 (uncertain > unassessed)
111. Species Rhizosolenia inermis F.Castracane, 1886 (uncertain > unassessed)
112. Species Rhizosolenia interposita Hajós, 1976 (uncertain > unassessed)
113. Species Rhizosolenia japonica Castracane, 1886 (uncertain > unassessed)
114. Species Rhizosolenia juetlandica Fenner, 1994 (uncertain > unassessed)
115. Species Rhizosolenia karsteni Hustedt in Schmidt et al., 1920 (uncertain > unassessed)
116. Species Rhizosolenia laevis H. Peragallo, 1892 (uncertain > unassessed)
117. Species Rhizosolenia levanderi (Cleve-Euler) (uncertain > unassessed)
118. Species Rhizosolenia longiseta Levander, 1904 (uncertain > unassessed)
119. Species Rhizosolenia longispina Voronichin, 1945 (uncertain > unassessed)
120. Species Rhizosolenia magna G.I.Hansen (uncertain > unassessed)
121. Species Rhizosolenia magna Stuwe, 1909 (uncertain > unassessed)
122. Species Rhizosolenia massiva Schrader in Schrader & Fenner, 1976 (uncertain > unassessed)
123. Species Rhizosolenia matuyamai Burckle, Hammond & Seyb, 1977 (uncertain > unassessed)
124. Species Rhizosolenia melo (Ehrenberg) Ehrenberg, 1854 accepted as Rhizonotia melo Ehrenberg, 1843 (uncertain > unassessed)
125. Species Rhizosolenia minima Levander, 1904 (uncertain > unassessed)
126. Species Rhizosolenia minima Schrader, 1976 (uncertain > unassessed)
127. Species Rhizosolenia miocenica Schrader, 1973 (uncertain > unassessed)
128. Species Rhizosolenia morsa West & G.S.West accepted as Rhizosolenia eriensis f. morsa W. & G. S. West, 1905 (1906) (uncertain > unassessed)
129. Species Rhizosolenia morsensis Fenner, 1994 (uncertain > unassessed)
130. Species Rhizosolenia murrayana Castracane, 1886 (uncertain > unassessed)
131. Species Rhizosolenia naui Kisselev, 1930 (uncertain > unassessed)
132. Species Rhizosolenia norwegica Schrader in Schrader & Fenner, 1976 (uncertain > unassessed)
133. Species Rhizosolenia nova Hensen, 1911 (uncertain > unassessed)
134. Species Rhizosolenia obtusa Hensen, 1887 (uncertain > unassessed)
135. Species Rhizosolenia obtusa Ostenfeld, 1903 (uncertain > unassessed)
136. Species Rhizosolenia oligocaenica Schrader, 1976 (uncertain > unassessed)
137. Species Rhizosolenia ornithoglossa Ehrenberg, 1844 (uncertain > unassessed)
138. Species Rhizosolenia pacifica H. Peragallo, 1892 (uncertain > unassessed)
139. Species Rhizosolenia palliola Schrader & Fenner, 1976 (uncertain > unassessed)
140. Species Rhizosolenia paludosa Zacharias ex Ostenfeld & Wesenberg-Lund, 1906 (uncertain > unassessed)
141. Species Rhizosolenia pellucida Cleve, 1901 (uncertain > unassessed)
142. Species Rhizosolenia pellucida Schroder, 1911 (uncertain > unassessed)
143. Species Rhizosolenia peragalloi Castracane, 1897 (uncertain > unassessed)
144. Species Rhizosolenia pileolus Ehrenberg, 1844 (uncertain > unassessed)
145. Species Rhizosolenia pokrovskajae (Jousé) Strelnikova, 1974 accepted as Pterotheca pokrovskajae Jousé, 1951 † (uncertain > unassessed)
146. Species Rhizosolenia polydactyla Castracane, 1886 (uncertain > unassessed)
147. Species Rhizosolenia praealata H.J.Schrader, 1973 (uncertain > unassessed)
148. Species Rhizosolenia praebarboi Schrader, 1973 (uncertain > unassessed)
149. Species Rhizosolenia praebergonii V.V.Muchina, 1965 (uncertain > unassessed)
150. Species Rhizosolenia punctata J.W. Bailey ex H. Peragallo, 1892 (uncertain > unassessed)
151. Species Rhizosolenia quadrijuncta H. Peragallo, 1892 (uncertain > unassessed)
152. Species Rhizosolenia quadriseta Zacharias, 1898 (uncertain > unassessed)
153. Species Rhizosolenia radiata Zenkevich, 1947 (uncertain > unassessed)
154. Species Rhizosolenia recta Cleve, 1901 (1902) (uncertain > unassessed)
155. Species Rhizosolenia reinboldii (Van Heurck) (uncertain > unassessed)
156. Species Rhizosolenia rhombus Karsten, 1905 (uncertain > unassessed)
157. Species Rhizosolenia rigida H. Peragallo, 1892 (uncertain > unassessed)
158. Species Rhizosolenia robusta G.Norman ex Ralfs, 1861 (uncertain > unassessed)
159. Species Rhizosolenia semispina Hensen, 1887 (uncertain > unassessed)
160. Species Rhizosolenia shrubsolei Cleve, 1881 (uncertain > unassessed)
161. Species Rhizosolenia sigma Schütt, 1893 (uncertain > unassessed)
162. Species Rhizosolenia sigmoida Sorhannus, 1990 (uncertain > unassessed)
163. Species Rhizosolenia sima Castracane, 1886 (uncertain > unassessed)
164. Species Rhizosolenia similis Cleve, 1937 (uncertain > unassessed)
165. Species Rhizosolenia similis Karsten, 1907 (uncertain > unassessed)
166. Species Rhizosolenia squamata Hensen, 1911 (uncertain > unassessed)
167. Species Rhizosolenia squamifera Sournia, 1968 (uncertain > unassessed)
168. Species Rhizosolenia squamoides Hensen, 1911 (uncertain > unassessed)
169. Species Rhizosolenia squamosa Pantocsek, 1892 (uncertain > unassessed)
170. Species Rhizosolenia squamosa Karsten, 1907 (uncertain > unassessed)
171. Species Rhizosolenia stagnalis Zacharias, 1898 accepted as Rhizosolenia eriensis f. stagnalis Zacharias, 1899 (uncertain > unassessed)
172. Species Rhizosolenia stolterfothii H.Peragallo, 1888 (uncertain > unassessed)
173. Species Rhizosolenia striata Greville, 1864 (uncertain > unassessed)
174. Species Rhizosolenia stricta Karsten, 1905 (uncertain > unassessed)
175. Species Rhizosolenia tenuijuncta Manguin, 1960 (uncertain > unassessed)
176. Species Rhizosolenia torpedo Karsten, 1905 (uncertain > unassessed)
177. Species Rhizosolenia truncata G.Karsten, 1905 (uncertain > unassessed)
178. Species Rhizosolenia tubiformis G.R.Hasle, 1975 (uncertain > unassessed)
179. Species Rhizosolenia twistata Whiting & Schrader, 1985 (uncertain > unassessed)
180. Species Rhizosolenia victoriae Schroder, 1912 (uncertain > unassessed)
181. Species Rhizosolenia vulgaris Ehrenberg, 1872 (1873) (uncertain > unassessed)

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