1. Species Spirogyra abbreviata Zheng, 1981
2. Species Spirogyra acanthophora (Skuja) Czurda, 1932
3. Species Spirogyra acumbentis Vodenicarov, 1970
4. Species Spirogyra adjerensis Gauthier-Lièvre, 1965
5. Species Spirogyra adnata (Vaucher) Kützing, 1843
6. Species Spirogyra adornata Ling, 1979
7. Species Spirogyra aequalis F.L.Harvey, 1892
8. Species Spirogyra aequinoctialis G.S.West, 1907
9. Species Spirogyra affinis (Hassall) Petit, 1880
10. Species Spirogyra africana (F.E.Fritsch) Czurda, 1932
11. Species Spirogyra ahmedabadensis N.D.Kamat, 1962
12. Species Spirogyra alkaliensis Noda, 1963
13. Species Spirogyra alpina Kützing, 1845
14. Species Spirogyra alternata Kützing
15. Species Spirogyra amphimorpha A.K.M.N.Islam, 1984
16. Species Spirogyra ampilii Ushadevi & Panikkar, 1994
17. Species Spirogyra amplectens Skuja, 1937
18. Species Spirogyra ampliata L.Liu, 1980
19. Species Spirogyra anchora Skuja, 1949
20. Species Spirogyra angolensis Welwitsch, 1897
21. Species Spirogyra angulata Nipkow, 1961
22. Species Spirogyra anjanii Ushadevi & Panikkar, 1994
23. Species Spirogyra anomala Bhashyakarla Rao, 1937
24. Species Spirogyra anzygoapora Singh, 1938
25. Species Spirogyra aphanosculpta Skuja, 1937
26. Species Spirogyra aplanospora Randhawa, 1938
27. Species Spirogyra archanii Ushadevi & Panikkar, 1994
28. Species Spirogyra arcta (C.Agardh) Endlichter, 1843
29. Species Spirogyra arcuata Liu, 1980
30. Species Spirogyra areolata Lagerheim, 1883
31. Species Spirogyra arizonensis Rickert & Hoshaw, 1970
32. Species Spirogyra arthuri Woodhead & Tweed, 1955
33. Species Spirogyra articulata Transeau, 1934
34. Species Spirogyra asiatica Czurda, 1932
35. Species Spirogyra atasiana Czurda, 1939
36. Species Spirogyra atrobrunnea Gauthier-Lièvre, 1965
37. Species Spirogyra aubvillei Gauthier-Lièvre, 1965
38. Species Spirogyra australica Czurda, 1932
39. Species Spirogyra australiensis Möbius, 1895
40. Species Spirogyra austriaca Czurda, 1932
41. Species Spirogyra azygospora R.N.Singh, 1938
42. Species Spirogyra baileyi Schmidle, 1896
43. Species Spirogyra baradwjae Ludhiana
44. Species Spirogyra bardhamanensis Kargupta et al., 1987
45. Species Spirogyra batekiana Gauthier-Lièvre, 1965
46. Species Spirogyra bellis (Hassall) P.Crouan & H.Crouan, 1867
47. Species Spirogyra belloniae Zeller, 1875
48. Species Spirogyra bengalensis Kargupta & P.Sarma, 1992
49. Species Spirogyra bicalyptrata Czurda, 1930
50. Species Spirogyra bichromatophora (Randhawa) Transeau, 1944
51. Species Spirogyra biformis C.-C.Jao, 1935
52. Species Spirogyra biharensis A.M.Verma & B.Kumari
53. Species Spirogyra bii Kadlubowska, 1983
54. Species Spirogyra bireticulata Liu, 1980
55. Species Spirogyra borealis Zheng & Ling, 1979
56. Species Spirogyra borgeana Transeau, 1916
57. Species Spirogyra borgei Kadlubowska, 1983
58. Species Spirogyra borkuense Gauthier-Lièvre, 1965
59. Species Spirogyra borysthenica Kasanowsky & Smirnoff [Smirnov], 1913
60. Species Spirogyra bourrellyana Gauthier-Lièvre, 1965
61. Species Spirogyra braziliensis (Nordstedt) Transeau, 1916
62. Species Spirogyra britannica Godward, 1956
63. Species Spirogyra brunnea Czurda, 1932
64. Species Spirogyra buchetii Petit, 1913
65. Species Spirogyra bullata C.-C.Jao, 1935
66. Species Spirogyra calcarea Transeau, 1934
67. Species Spirogyra calchaquiesiae B.Tracanna
68. Species Spirogyra californica Stancheva, J.D.Hall, McCourt & Sheath, 2013
69. Species Spirogyra calospora Cleve, 1868
70. Species Spirogyra canaliculata Segar, 1967
71. Species Spirogyra cardinia S.H.Lewis, 2000
72. Species Spirogyra caroliniana G.E.Dillard, 1969
73. Species Spirogyra castanacea G.C.Couch, 1944
74. Species Spirogyra cataeniformis (Hassall) Kützing, 1849
75. Species Spirogyra cavata Vodenicarov, 1970
76. Species Spirogyra chaibasaensis A.K.Mahato, 1995
77. Species Spirogyra chakiaensis (Bhashyakarla Rao) Willi Krieger, 1944
78. Species Spirogyra chandrae Kargupta & R.N.Jha, 2004
79. Species Spirogyra chavarensis Ushadevi & Panikkar, 1994
80. Species Spirogyra chekiangensis C.-C.Jao, 1939
81. Species Spirogyra chenii C.-C.Jao, 1935
82. Species Spirogyra chittagongenensis A.K.M.N.Islam, 1984
83. Species Spirogyra chungkingensis Jao, 1935
84. Species Spirogyra chuniae C.-C.Jao, 1935
85. Species Spirogyra circumlineata Transeau, 1914
86. Species Spirogyra circumvarians Kargupta & R.N.Jha, 2004
87. Species Spirogyra clavata Segar, 1967
88. Species Spirogyra cleveana Transeau, 1934
89. Species Spirogyra colligata Hodgetts, 1920
90. Species Spirogyra columbiana Czurda, 1932
91. Species Spirogyra communis (Hassall) Kützing, 1849
92. Species Spirogyra condensata (Vaucher) Dumortier, 1822
93. Species Spirogyra congolensis Gauthier-Lièvre
94. Species Spirogyra conspicua F.Gay, 1884
95. Species Spirogyra convoluta
96. Species Spirogyra corrugata Woodhead & Tweed, 1955
97. Species Spirogyra costata Kadlubowska, 1979
98. Species Spirogyra costulata Kadlubowska, 1979
99. Species Spirogyra coumbiana Czurda
100. Species Spirogyra crassa (Kützing) Kützing, 1843
101. Species Spirogyra crassispina C.-C.Jao, 1939 †
102. Species Spirogyra crassiuscula (Wittrock & Nordstedt) Transeau, 1934
103. Species Spirogyra crassivallicularis C.-C.Jao, 1935
104. Species Spirogyra crassoidea (Transeau) Transeau, 1937
105. Species Spirogyra crenulata R.N.Singh, 1938
106. Species Spirogyra croasdaleae Blum, 1943
107. Species Spirogyra cupientis D.G.Vodenicharov & I.K.Kiryakov
108. Species Spirogyra cyanosporum
109. Species Spirogyra cylindrica Czurda, 1932
110. Species Spirogyra cylindrosperma (West & G.S.West) H.Krieger, 1944
111. Species Spirogyra cylindrospora West & G.S.West, 1897
112. Species Spirogyra czubinskii Kadlubowska, 1972
113. Species Spirogyra czurdae J.N.Misra, 1937
114. Species Spirogyra czurdiana Kadlubowska, 1979
115. Species Spirogyra dacimina (O.F.Müller) Kützing, 1843
116. Species Spirogyra daedalea Lagerheim, 1888
117. Species Spirogyra daedaleoides Czurda, 1932
118. Species Spirogyra danica Kadlubowska, 1979
119. Species Spirogyra darbhangensis Kargupta & al., 1987
120. Species Spirogyra decima
121. Species Spirogyra decimina (O.F.Müller) Dumortier, 1822
122. Species Spirogyra densa Kützing, 1855
123. Species Spirogyra denticulata Transeau, 1934
124. Species Spirogyra dentireticulata C.-C.Jao, 1935
125. Species Spirogyra desikacharyensis R.S.Rattan, 1970
126. Species Spirogyra dialyderma Ling & Zheng, 1979
127. Species Spirogyra dicephala C.-C.Jao & H.Z.Zhu, 1982
128. Species Spirogyra dictyospora C.-C.Jao, 1935
129. Species Spirogyra diluta H.C.Wood, 1869
130. Species Spirogyra dimorpha Geitler, 1949
131. Species Spirogyra discoidea Transeau, 1934
132. Species Spirogyra discreta Transeau, 1934
133. Species Spirogyra distenta Transeau, 1934
134. Species Spirogyra diversizygotica (V.I.Poljansky) L.A.Rundina, 1991
135. Species Spirogyra dixitii H.Krieger, 1944
136. Species Spirogyra djalonensis Gauthier-Lièvre, 1965
137. Species Spirogyra djiliense Gauthier-Lièvre, 1965
138. Species Spirogyra dodgeana
139. Species Spirogyra drilonensis Petkoff, 1910
140. Species Spirogyra dubia Kützing, 1849
141. Species Spirogyra echinata Tiffany, 1924
142. Species Spirogyra echinospora Blum, 1943
143. Species Spirogyra eillipsospora Transeau
144. Species Spirogyra elegans Wollny, 1877
145. Species Spirogyra elegantissima Y.J.Ling & Y.M.Zheng, 1979
146. Species Spirogyra ellipsospora Transeau, 1914
147. Species Spirogyra elliptica C.-C.Jao, 1935
148. Species Spirogyra emilianensis Bonhomme, 1858
149. Species Spirogyra endogranulata O.Bock & W.Bock, 1956
150. Species Spirogyra exilis West & G.S.West, 1908
151. Species Spirogyra fallax (Hansgirg) Wille, 1900
152. Species Spirogyra fassula Zheng, 1981
153. Species Spirogyra favosa Y.-X.Wei & Y.-K.Yung
154. Species Spirogyra fennica Cedercreutz, 1924
155. Species Spirogyra ferruginea H.W.Liang, 1979
156. Species Spirogyra flavescens (Hassall) Kützing, 1849
157. Species Spirogyra flavicans Kützing
158. Species Spirogyra fluviatilis Hilse, 1863
159. Species Spirogyra formosa (Transeau) Czurda, 1932
160. Species Spirogyra fossa C.-C.Jao, 1935
161. Species Spirogyra fossulata C.-C.Jao & Hu, 1979
162. Species Spirogyra foveolata (Transeau) Czurda, 1932
163. Species Spirogyra franconica O.Bock & W.Bock, 1956
164. Species Spirogyra frankliniana Tiffany, 1934
165. Species Spirogyra frigida F.Gay, 1884
166. Species Spirogyra fritschiana Czurda, 1932
167. Species Spirogyra fukienica Wei, 1979
168. Species Spirogyra fuscoatra Rabenhorst, 1868
169. Species Spirogyra fuzhouensis H.-J.Hu, 1979
170. Species Spirogyra gallica Petit, 1880
171. Species Spirogyra gangaensis Lakshminarasimhan, 1963
172. Species Spirogyra garlandica Kargupta & R.N.Jha, 2004
173. Species Spirogyra gaterslebensis Reith, 1973
174. Species Spirogyra gauthieri Gayral, 1951
175. Species Spirogyra gauthier-lievrae Kadlubowska, 1984
176. Species Spirogyra gharbensis Gauthier-Lièvre, 1965
177. Species Spirogyra ghosei R.N.Singh, 1938
178. Species Spirogyra gibberosa C.-C.Jao, 1935
179. Species Spirogyra glabra Czurda, 1932
180. Species Spirogyra globulispora Gauthier-Lièvre, 1965
181. Species Spirogyra gobonensis Gauthier-Lièvre, 1965
182. Species Spirogyra godwardiae M.Srivastava, 1986
183. Species Spirogyra goetzei Schmidle, 1901
184. Species Spirogyra gracilis Kützing, 1849
185. Species Spirogyra granulata C.-C.Jao, 1935
186. Species Spirogyra gratiana Transeau, 1938
187. Species Spirogyra groenlandica Rosenvinge, 1884
188. Species Spirogyra guangchowensis Zhu & Zhong, 1981
189. Species Spirogyra guineense Gauthier-Lièvre, 1965
190. Species Spirogyra gujaratensis N.D.Kamat, 1962
191. Species Spirogyra gurdaspurensis R.S.Rattan, 1971
192. Species Spirogyra haimenensis C.-C.Jao, 1939
193. Species Spirogyra hartigii (Kützing) De Toni, 1889
194. Species Spirogyra hassalii (Jenner) Petit
195. Species Spirogyra hassallii (Jenner ex Hassall) P.L.Crouan & H.M.Crouan, 1867
196. Species Spirogyra hatillensis Transeau, 1936
197. Species Spirogyra heeriana Nägeli ex Kützing, 1849
198. Species Spirogyra henanensis (L.J.Bi) L.J.Bi, 1982
199. Species Spirogyra herbipolensis O.Bock & W.Bock, 1952
200. Species Spirogyra heterospora Liu, 1988
201. Species Spirogyra hoehnei Borge, 1925
202. Species Spirogyra hoggarica (Gauthier-Lièvre) Gauthier-Lièvre, 1965
203. Species Spirogyra hollandiae Taft, 1947
204. Species Spirogyra hopeiensis C.-C.Jao, 1935
205. Species Spirogyra hunanensis C.-C.Jao, 1940
206. Species Spirogyra hungarica Langer, 1932
207. Species Spirogyra hyalina Cleve, 1868
208. Species Spirogyra hymerae Britton & B.H.Smith, 1942
209. Species Spirogyra inconstans Collins, 1912
210. Species Spirogyra incrassata Czurda, 1930
211. Species Spirogyra indiana Kargupta & R.N.Jha, 2004
212. Species Spirogyra indica Willi Krieger, 1944
213. Species Spirogyra inflata (Vaucher) Dumortier, 1822
214. Species Spirogyra insignis (Hassall) Kützing, 1849
215. Species Spirogyra insueta Zhu & Zhong, 1981
216. Species Spirogyra intermedia Rabenhorst, 1863
217. Species Spirogyra intorta C.-C.Jao, 1935
218. Species Spirogyra ionia Wade, 1949
219. Species Spirogyra irregularis Nägeli ex Kützing, 1849
220. Species Spirogyra islamii Kargupta & P.Sarma, 1992
221. Species Spirogyra ivorensis Gauthier-Lièvre, 1965
222. Species Spirogyra iyengarii Kadlubowska
223. Species Spirogyra jaoensis Randhawa, 1938
224. Species Spirogyra jaoi S.H.Ley, 1944
225. Species Spirogyra jassiensis (Teodoresco) Czurda, 1932
226. Species Spirogyra jatobae Transeau, 1938
227. Species Spirogyra jogensis M.O.P.Iyengar, 1958
228. Species Spirogyra jugalis (Dillwyn) Kützing, 1845
229. Species Spirogyra juliana Stancheva, J.D.Hall, McCourt & Sheath, 2013
230. Species Spirogyra kaffirita Transeau, 1934
231. Species Spirogyra kamatii Kargupta & P.Sarma, 1992
232. Species Spirogyra karnalae Randhawa, 1958
233. Species Spirogyra khuntiensis A.K.Mahato, 1995
234. Species Spirogyra kiratpurensis
235. Species Spirogyra kolae Hajdu, 1975
236. Species Spirogyra kolhapurensis N.D.Kamat, 1963
237. Species Spirogyra koreana J.-H.Kim, Y.H.Kim & I.K.Lee
238. Species Spirogyra krubergii V.J.Poljanski, 1951
239. Species Spirogyra kundaensis R.N.Singh, 1938
240. Species Spirogyra kusheshwarsthanensis Kargupta & P.Sarma, 2004
241. Species Spirogyra kuusamoensis Hirn, 1895
242. Species Spirogyra labbei Gauthier-Lièvre, 1965
243. Species Spirogyra labyrinthica Transeau, 1934
244. Species Spirogyra lacustris Czurda, 1932
245. Species Spirogyra lagerheimii Wittrock, 1889
246. Species Spirogyra laka Kützing
247. Species Spirogyra lallandiae Taft
248. Species Spirogyra lambertiana Transeau, 1934
249. Species Spirogyra lamellata (Bhashyakarla Rao) Willi Krieger, 1944
250. Species Spirogyra lamellosa C.-C.Jao, 1935
251. Species Spirogyra lapponica Lagerheim
252. Species Spirogyra latireticulata Zheng & Ling, 1979
253. Species Spirogyra latviensis Czurda, 1932
254. Species Spirogyra laxa Kützing, 1849
255. Species Spirogyra laxistrata C.-C.Jao, 1935
256. Species Spirogyra lenticularis Transeau, 1938
257. Species Spirogyra lentiformis L.J.Bi, 1979
258. Species Spirogyra lians Transeau, 1934
259. Species Spirogyra libyca Gauthier-Lièvre, 1965
260. Species Spirogyra lineata Suringar, 1967
261. Species Spirogyra lismorensis Playfair, 1917
262. Species Spirogyra litorea Zanardini, 1847
263. Species Spirogyra lodziensis Kadlubowska, 1972
264. Species Spirogyra lohandensis
265. Species Spirogyra longifissa Wei, 1979
266. Species Spirogyra lubrica Kützing
267. Species Spirogyra ludhianensis
268. Species Spirogyra lushanensis L.C.Li, 1938
269. Species Spirogyra luteospora Czurda, 1932
270. Species Spirogyra lutetiana Petit, 1879
271. Species Spirogyra lymerae Britton & Smith
272. Species Spirogyra macrospora (C.B.Rao) Krieger, 1944
273. Species Spirogyra maghrebiana Gauthier-Lièvre, 1965
274. Species Spirogyra magna (Dixit) H.Krieger, 1944
275. Species Spirogyra major Kützing, 1855
276. Species Spirogyra majuscula Kützing, 1849
277. Species Spirogyra malmeana Hirn, 1896
278. Species Spirogyra manoramae Randhawa, 1938
279. Species Spirogyra mantonii
280. Species Spirogyra maravillosa Transeau, 1938
281. Species Spirogyra marchica H.Krieger, 1941
282. Species Spirogyra margalefii Aboal & Llimona, 1984
283. Species Spirogyra margaritata Wollny, 1877
284. Species Spirogyra marocana Gauthier-Lièvre, 1965
285. Species Spirogyra mattonensis (Misra) H.Krieger, 1944
286. Species Spirogyra maxima (Hassall) Wittrock, 1882
287. Species Spirogyra mayyanadensis Ushadevi & Panikkar, 1994
288. Species Spirogyra megaspora Transeau, 1934
289. Species Spirogyra meinningensis
290. Species Spirogyra meridionalis W.J.Zhu & Zhong, 1982
291. Species Spirogyra miamiana Taft, 1944
292. Species Spirogyra microdictyon C.-C.Jao & Hu, 1978
293. Species Spirogyra microgranulata C.-C.Jao, 1935
294. Species Spirogyra micropunctata Transeau, 1916
295. Species Spirogyra microspora C.-C.Jao, 1935
296. Species Spirogyra mienningensis L.-C.Li, 1940
297. Species Spirogyra minor (Schmidle) Transeau, 1944
298. Species Spirogyra minuticrassoidea Yamagishi, 1963
299. Species Spirogyra minutifossa C.-C.Jao, 1935
300. Species Spirogyra mirabilis (Hassall) Kützing, 1849
301. Species Spirogyra miranda Kadlubowska, 1979
302. Species Spirogyra mirifica Zheng & Ling, 1979
303. Species Spirogyra mithalaensis A.M.Verma & B.Kumari
304. Species Spirogyra moebii Transeau, 1934
305. Species Spirogyra moheshwarii
306. Species Spirogyra monodiana Gauthier-Lièvre, 1941
307. Species Spirogyra montserrati Margalef, 1952
308. Species Spirogyra moulankariensis Usha & Panikkar, 1994
309. Species Spirogyra multiconjugata N.C.Ferrer & E.J.Cáceres, 2008
310. Species Spirogyra multiformis Kadlubowska, 1983
311. Species Spirogyra multistrata Zheng & Ling, 1979
312. Species Spirogyra multitrata Zheng & Ling, 1979
313. Species Spirogyra mutabilis C.-C.Jao & H.J.Hu, 1982
314. Species Spirogyra narcissiana Transeau, 1914
315. Species Spirogyra natchita Transeau, 1934
316. Species Spirogyra neglecta (Hassall) Kützing, 1849
317. Species Spirogyra neorhizobrachialis C.-C.Jao & Zheng, 1982
318. Species Spirogyra nitida (O.F.Müller) Leiblein, 1827
319. Species Spirogyra nodifera O.Bock & W.Bock, 1956
320. Species Spirogyra notabilis Taft, 1944
321. Species Spirogyra nova-angliae Transeau, 1915
322. Species Spirogyra novae-angliae Transeau, 1916
323. Species Spirogyra nyctigama Taft, 1938
324. Species Spirogyra oblata C.-C.Jao, 1936
325. Species Spirogyra oblonga Liu, 1980
326. Species Spirogyra obovata C.-C.Jao, 1935
327. Species Spirogyra occidentalis (Transeau) Czurda, 1932
328. Species Spirogyra oligocarpa C.-C.Jao, 1941
329. Species Spirogyra olivascens Rabenhorst, 1863
330. Species Spirogyra ollicola C.-C.Jao & Zhong, 1982
331. Species Spirogyra oltmannsii Huber-Pestalozzi, 1930
332. Species Spirogyra orientalis West & G.S.West, 1907
333. Species Spirogyra orthospira Nägeli, 1849
334. Species Spirogyra ouarsenica Gauthier-Lièvre, 1965
335. Species Spirogyra ovigera Montagne, 1850
336. Species Spirogyra pachyderma Gauthier-Lièvre, 1965
337. Species Spirogyra palghatensis Erady, 1962
338. Species Spirogyra paludosa Czurda, 1932
339. Species Spirogyra papulata C.-C.Jao, 1935
340. Species Spirogyra paradoxa Bhashyakarla Rao, 1937
341. Species Spirogyra paraguayensis Borge, 1903
342. Species Spirogyra parva (Hassall) Kützing, 1849
343. Species Spirogyra parvispora H.C.Wood, 1869
344. Species Spirogyra parvula (Transeau) Czurda, 1932
345. Species Spirogyra pascheriana Czurda, 1932
346. Species Spirogyra patliputri A.M.Verma & B.Kumari
347. Species Spirogyra peipeingensis C.-C.Jao, 1939
348. Species Spirogyra peipingensis
349. Species Spirogyra pellucida (Hassall) Kützing, 1849
350. Species Spirogyra perforans Transeau, 1934
351. Species Spirogyra plena (West & G.S.West) Czurda, 1932
352. Species Spirogyra poljanskii Kadlubowska, 1972
353. Species Spirogyra polymorpha Kirchner, 1878
354. Species Spirogyra polytaeniata Strasburger, 1888
355. Species Spirogyra porangabae Transeau, 1938
356. Species Spirogyra porticalis (O.F.Müller) Dumortier, 1822
357. Species Spirogyra pratensis Transeau, 1914
358. Species Spirogyra princeps (Vaucher) Link ex Meyen, 1827
359. Species Spirogyra proavita Langer, 1913
360. Species Spirogyra prolifica N.D.Kamat, 1962
361. Species Spirogyra propria Transeau, 1916
362. Species Spirogyra protecta H.C.Wood, 1869
363. Species Spirogyra pseudoaedaloides Kadlubowska, 1979
364. Species Spirogyra pseudobellis W.J.Zhu & Zhong, 1981
365. Species Spirogyra pseudocorrugata Gauthier-Lièvre, 1965
366. Species Spirogyra pseudocylindrica Prescott, 1949
367. Species Spirogyra pseudogauthieri Kargupta & P.Sarma, 1992
368. Species Spirogyra pseudogibberosa Gauthier-Lièvre, 1965
369. Species Spirogyra pseudogranulata S.-H.Ley, 1944
370. Species Spirogyra pseudojuergensii H.Silva, 1949
371. Species Spirogyra pseudomaiuscula Gauthier-Lièvre, 1965
372. Species Spirogyra pseudomajuscula Gauthier-Lièvre, 1965
373. Species Spirogyra pseudomaxima Kadlubowska, 1979
374. Species Spirogyra pseudoneglecta Czurda, 1932
375. Species Spirogyra pseudonodifera O.Bock & W.Bock, 1956
376. Species Spirogyra pseudoplena Liu, 1980
377. Species Spirogyra pseudopulchrata C.-C.Jao, 1935
378. Species Spirogyra pseudoreticulata H.Krieger, 1944
379. Species Spirogyra pseudorhizopus L.J.Bi, 1979
380. Species Spirogyra pseudosahnii Kadlubowska, 1979
381. Species Spirogyra pseudospreciana C.-C.Jao, 1935
382. Species Spirogyra pseudosubreticulata Rickert & Hoshaw, 1970
383. Species Spirogyra pseudotenuissima O.Bock & W.Bock, 1956
384. Species Spirogyra pseudotetrapla Kadlubowska, 1981
385. Species Spirogyra pseudotexensis Bourrelly, 1957
386. Species Spirogyra pseudovarians Czurda, 1930
387. Species Spirogyra pseudovenusta Liu & Wei, 1980
388. Species Spirogyra pseudowoodii V.J.Poljanski, 1959
389. Species Spirogyra pulchella (H.C.Wood) H.C.Wood
390. Species Spirogyra pulchra Alexenko, 1891
391. Species Spirogyra pulchrifigurata C.-C.Jao, 1935
392. Species Spirogyra puncticulata C.-C.Jao, 1934
393. Species Spirogyra punctulata C.-C.Jao, 1936
394. Species Spirogyra quadrata (Hassall) P.Petit, 1874
395. Species Spirogyra quadrilaminata C.-C.Jao, 1935
396. Species Spirogyra quezelii Gauthier-Lièvre, 1958
397. Species Spirogyra quilonensis Kothari, 1971
398. Species Spirogyra quinquilaminata C.-C.Jao, 1935
399. Species Spirogyra randhawae Krieger, 1944
400. Species Spirogyra ranipurensis Kargupta & R.N.Jha, 2004
401. Species Spirogyra rattanii Kadlubowska, 1983
402. Species Spirogyra recostata Kargupta & R.N.Jha, 2004
403. Species Spirogyra rectangularis Transeau, 1914
404. Species Spirogyra rectispira Merriman, 1922
405. Species Spirogyra regularis (Cedercreutz) H.Krieger, 1941
406. Species Spirogyra reinhardii Khmelevesky [Chmielewski, Khmelevesky], 1890
407. Species Spirogyra reticulata Nordstedt, 1880
408. Species Spirogyra reticulatum Randhawa
409. Species Spirogyra reticuliana Randhawa, 1938
410. Species Spirogyra rhizobrachialis C.-C.Jao, 1935
411. Species Spirogyra rhizobranchialis C.-C.Jao, 1935
412. Species Spirogyra rhizoides Randhawa, 1938
413. Species Spirogyra rhizopus C.-C.Jao, 1936
414. Species Spirogyra rivularis (Hassall) Rabenhorst, 1868
415. Species Spirogyra robusta (Nygaard) Czurda, 1932
416. Species Spirogyra rugosa (Transeau) Czurda, 1932
417. Species Spirogyra rugulosa Iwanoff, 1900
418. Species Spirogyra sahnii Randhawa, 1938
419. Species Spirogyra salina Aleem, 1961
420. Species Spirogyra salmonispora N.C.Ferrer & E.J.Cáceres, 1995
421. Species Spirogyra sanjingensis Y.Wang & Z.Wang, 1985
422. Species Spirogyra sarmae M.Singh & M.Srivastava, 1997
423. Species Spirogyra schimidtii West & G.S.West
424. Species Spirogyra schmidtii West & G.S.West, 1901
425. Species Spirogyra schweickerdtii Cholonky, 1952
426. Species Spirogyra scripta Nygaard, 1932
427. Species Spirogyra scrobiculata (Stockmayer) Czurda, 1932
428. Species Spirogyra sculpta Gauthier-Lièvre, 1965
429. Species Spirogyra semiornata C.-C.Jao, 1935
430. Species Spirogyra senegalensis Gauthier-Lièvre, 1965
431. Species Spirogyra sericea Zanardini, 1847
432. Species Spirogyra setiformis (Roth) Martens ex Meneghini, 1837
433. Species Spirogyra setiformis Kützing, 1845
434. Species Spirogyra shantungensis L.-C.Li, 1936
435. Species Spirogyra shanxiensis Zheng & Ling, 1979
436. Species Spirogyra shenzaensis Zheng, 1979
437. Species Spirogyra siamensis Transeau, 1951
438. Species Spirogyra siberica Skvortsov, 1927
439. Species Spirogyra silesiaca Kadlubowska, 1967
440. Species Spirogyra sinensis L.-C.Li, 1933
441. Species Spirogyra singularis Nordstedt, 1880
442. Species Spirogyra sinhaensis M.Srivastava, 1984
443. Species Spirogyra skujae Randhawa, 1938
444. Species Spirogyra skvortzowii Willi Krieger, 1944
445. Species Spirogyra smithii Transeau, 1934
446. Species Spirogyra speciosa Liu, 1980
447. Species Spirogyra sphaerica (Misra) H.Krieger, 1944
448. Species Spirogyra sphaerocarpa C.-C.Jao, 1939
449. Species Spirogyra sphaerospora Hirn, 1895
450. Species Spirogyra spinescens Kirjakov, 1970
451. Species Spirogyra splendida G.S West, 1914
452. Species Spirogyra spreeiana Rabenhorst, 1863
453. Species Spirogyra subaffinis F.E.Fritsch & M.F.Rich, 1929
454. Species Spirogyra subbullata Kadlubowska, 1983
455. Species Spirogyra subcolligata L.J.Bi, 1979
456. Species Spirogyra subcrassa Woronchin, 1954
457. Species Spirogyra subcrassiuscula L.J.Bi, 1982
458. Species Spirogyra subcylindrospora C.-C.Jao, 1935
459. Species Spirogyra subechinata Godward, 1956
460. Species Spirogyra subformosa Kargupta & P.Sarma, 1992
461. Species Spirogyra subfossulata C.-C.Jao, 1982
462. Species Spirogyra subfragilis A.K.M.N.Islam, 1969
463. Species Spirogyra subglabra Zheng & Ling, 1979
464. Species Spirogyra sublambertiana Zhao, 1982
465. Species Spirogyra sublamellata A.K.M.N.Islam, 1984
466. Species Spirogyra subluteospora C.-C.Jao & Hu, 1978
467. Species Spirogyra submajuscula Ling & Zheng, 1979
468. Species Spirogyra submargaritata Godward, 1956
469. Species Spirogyra submarina (Collins) Transeau, 1916
470. Species Spirogyra submaxima Transeau, 1914
471. Species Spirogyra subobovata Chian, 1981
472. Species Spirogyra subpapulatata C.-C.Jao, 1935
473. Species Spirogyra subpellucida C.-C.Jao, 1939
474. Species Spirogyra subpolytaeniata C.-C.Jao, 1941
475. Species Spirogyra subpratensis Woronichin, 1950
476. Species Spirogyra subreflexa Liang & Wang, 1979
477. Species Spirogyra subreticulata F.E.Fritsch, 1921
478. Species Spirogyra subsalina Cedercreutz, 1924
479. Species Spirogyra subsalsa Kützing, 1845
480. Species Spirogyra subsalso-punctatulata Kadlubowska, 1972
481. Species Spirogyra subtropica Chian, 1981
482. Species Spirogyra suburbana C.-C.Jao, 1982
483. Species Spirogyra subvelata Willi Krieger, 1944
484. Species Spirogyra subvermiculata A.K.M.N.Islam, 1984
485. Species Spirogyra subverrucosa Kargupta & P.Sarma, 1992
486. Species Spirogyra sulcata Blum, 1944
487. Species Spirogyra sundanensis Gauthier-Lièvre, 1965
488. Species Spirogyra superba L.Liu, 1980
489. Species Spirogyra supervarians Transeau, 1934
490. Species Spirogyra szechwanensis C.-C.Jao, 1935
491. Species Spirogyra taftiana Transeau, 1944
492. Species Spirogyra taiyuanensis Ling, 1979
493. Species Spirogyra tandae Randhawa, 1938
494. Species Spirogyra taylorii C.-C.Jao, 1935
495. Species Spirogyra tenuispina Rundina, 1977
496. Species Spirogyra tenuissima (Hassall) Kützing, 1849
497. Species Spirogyra teodorescui Transeau, 1934
498. Species Spirogyra ternata Ripart, 1876
499. Species Spirogyra tetrapla Transeau, 1938
500. Species Spirogyra tibetensis C.-C.Jao, 1964
501. Species Spirogyra tjibodensis Faber, 1912
502. Species Spirogyra tolosana Comère, 1889
503. Species Spirogyra torta Blum, 1943
504. Species Spirogyra trachycarpa Skuja, 1934
505. Species Spirogyra transeauiana C.-C.Jao, 1935
506. Species Spirogyra triplicata (Collins) Transeau, 1944
507. Species Spirogyra trochainii Gauthier-Lièvre, 1965
508. Species Spirogyra tropica Kützing, 1855
509. Species Spirogyra tsingtaoensis L.-C.Li, 1936
510. Species Spirogyra tuberculata Lagerheim, 1896
511. Species Spirogyra tuberculosa Liang & Wang, 1979
512. Species Spirogyra tubifera Kargupta & R.N.Jha, 2004
513. Species Spirogyra tucumaniae B.Tracanna
514. Species Spirogyra tumida C.-C.Jao, 1935
515. Species Spirogyra turfosa F.Gay, 1884
516. Species Spirogyra tuwensis R.J.Patel & C.K.Ashok Kumar, 1970
517. Species Spirogyra ugandense Gauthier-Lièvre, 1965
518. Species Spirogyra unduliseptum Randhawa, 1938
519. Species Spirogyra urbana C.-C.Jao & Zhong, 1982
520. Species Spirogyra van-zantenii Cholonky, 1952
521. Species Spirogyra variabilis C.-C.Jao & Hu, 1978
522. Species Spirogyra varians (Hassall) Kützing, 1849
523. Species Spirogyra variaspora Rickert & Hoshaw, 1970
524. Species Spirogyra varifaveolata B.N.Prasad & S.Dutta, 1970
525. Species Spirogyra variformis Transeau, 1938
526. Species Spirogyra varireticulata Kargupta & R.N.Jha, 2004
527. Species Spirogyra varshaii Prasad & Dutta, 1970
528. Species Spirogyra vasishtii R.S.Rattan, 1971
529. Species Spirogyra velata Nordstedt, 1873
530. Species Spirogyra venkataramanii R.S.Rattan, 1967
531. Species Spirogyra venosa Kadlubowska, 1979
532. Species Spirogyra venusta C.-C.Jao, 1935
533. Species Spirogyra vermiculata C.-C.Jao & H.J.Hu, 1978
534. Species Spirogyra verrucogranulata I.C A.Dias & C.E.de M.Bicudo
535. Species Spirogyra verrucosa (C.B.Rao) H.Krieger, 1944
536. Species Spirogyra verruculosa C.-C.Jao, 1936
537. Species Spirogyra voltaica Gauthier-Lièvre, 1965
538. Species Spirogyra wangii L.C.Li, 1933
539. Species Spirogyra weberi Kützing, 1843
540. Species Spirogyra weberrii
541. Species Spirogyra weishuiensis Ling & Zheng, 1979
542. Species Spirogyra weletischii West & G.S.West, 1897
543. Species Spirogyra welwitschii West & G.S.West, 1897
544. Species Spirogyra willei Skuja, 1928
545. Species Spirogyra wittrockii Alexenko, 1894
546. Species Spirogyra wollnyi De Toni, 1889
547. Species Spirogyra wrightiana Transeau, 1938
548. Species Spirogyra wuchanensis C.-C.Jao & H.-J.Hu, 1978
549. Species Spirogyra wuhanensis C.-C.Jao & H.-J.Hu, 1978
550. Species Spirogyra xiaoganensis Liu, 1980
551. Species Spirogyra xinxiangensis L.J.Bi, 1979
552. Species Spirogyra yamagishii Kargupta & P.Sarma, 1992
553. Species Spirogyra yexianensis L.J.Bi, 1979
554. Species Spirogyra yuin S.Skinner & Entwisle, 2005
555. Species Spirogyra yunanensis L.-C.Li, 1939
556. Species Spirogyra ampla (C.-C.Jao) H.Krieger, 1944 accepted as Temnogyra ampla (C.-C.Jao) Yamagishi, 1963
557. Species Spirogyra arta C.-C.Jao, 1935 accepted as Spirogyra frigida f. arta (C.-C.Jao) C.-C.Jao, 1982
558. Species Spirogyra cateniformis (Hassall) Kützing, 1849 accepted as Spirogyra cataeniformis (Hassall) Kützing, 1849
559. Species Spirogyra ceylanica (Wittrock) De Toni, 1889 accepted as Sirogonium ceylanicum Wittrock, 1880 (synonym)
560. Species Spirogyra circumcissa Czurda, 1930 accepted as Spirogyra decimina var. circumcissa (Czurda) Petlovany, 2015
561. Species Spirogyra collinsii (I.F.Lewis) Printz, 1927 accepted as Temnogyra collinsii I.F.Lewis, 1925
562. Species Spirogyra corrugata Transeau, 1934 accepted as Temnogyra corrugata (Transeau) Yamagishi, 1963
563. Species Spirogyra crassiuscula L.J.Bi, 1979 accepted as Spirogyra subcrassiuscula L.J.Bi, 1982
564. Species Spirogyra dicyozygotica H.R.Chu & W.C.Chu, 1962 accepted as Spirogyra daedaleoides Czurda, 1932
565. Species Spirogyra dimorpha Liu, 1980 accepted as Spirogyra heterospora Liu, 1988
566. Species Spirogyra elongata (Vaucher) Kützing, 1843 accepted as Spirogyra decimina var. elongata (Vaucher) Petlovany, 2015
567. Species Spirogyra elongata (Vaucher) Dumortier, 1822 accepted as Spirogyra decimina var. elongata (Vaucher) Petlovany, 2015
568. Species Spirogyra esthonica (Skuja) Czurda, 1932 accepted as Temnogyra esthonica (Skuja) Yamagishi, 1963
569. Species Spirogyra farlowii Transeau, 1916 accepted as Spirogyra weberi var. farlowii (Transeau) Petlovany, 2015
570. Species Spirogyra floridana Transeau, 1916 accepted as Sirogonium floridanum (Transeau) G.M.Smith, 1933
571. Species Spirogyra fossicola C.-C.Jao & Chian, 1982 accepted as Spirogyra arcuata Liu, 1980
572. Species Spirogyra fragilis C.-C.Jao, 1935 accepted as Spirogyra teodorescui Transeau, 1934
573. Species Spirogyra fuellebornei Schmidle, 1902 accepted as Spirogyra neglecta var. fuellerbornei (Schmidle) Petlovany, 2015
574. Species Spirogyra grevilleana (Hassall) Kützing, 1849 accepted as Spirogyra weberi var. grevilleana (Hassal) O.Kirchner, 1878
575. Species Spirogyra grossii Schmidle, 1901 accepted as Spirogyra fluviatilis var. grossii (Schmidle) Petlovany, 2015
576. Species Spirogyra hui L.C.Li, 1938 accepted as Sirogonium hui (L.C.Li) Transeau, 1944
577. Species Spirogyra hydrodicta Transeau, 1915 accepted as Temnogyra hydrodicta (Transeau) Yamagishi, 1963
578. Species Spirogyra illinoisensis Transeau, 1914 accepted as Sirogonium illinoisense (Transeau) G.M.Smith, 1933
579. Species Spirogyra juergensii Kützing, 1845 accepted as Spirogyra decimina var. juergensii (Kützing) Petlovany, 2015
580. Species Spirogyra liana Transeau, 1934 accepted as Temnogyra liana (Transeau) Yamagishi, 1963
581. Species Spirogyra maior Kützing, 1849 accepted as Spirogyra major Kützing, 1855 (synonym)
582. Species Spirogyra naegelii Kützing, 1849 accepted as Spirogyra tenuissima (Hassall) Kützing, 1849 (synonym)
583. Species Spirogyra nawaschinii Kasanowsky, 1913 accepted as Spirogyra reticulata var. nawaschinii (Kasanowsky) Petlovany, 2015
584. Species Spirogyra necopinata Margalef, 1948 accepted as Spirogyra margalefii Aboal & Llimona, 1984 (synonym)
585. Species Spirogyra orbicularis Kützing accepted as Spirogyra maxima (Hassall) Wittrock, 1882 (synonym)
586. Species Spirogyra oudhensis Randhawa, 1938 accepted as Spirogyra daedalea f. oudhensis (Randhawa) V.Poljansky, 1966
587. Species Spirogyra parvula Transeau accepted as Spirogyra parvula (Transeau) Czurda, 1932
588. Species Spirogyra prescottii Transeau, 1944 accepted as Temnogyra prescottii (Transeau) Yamagishi, 1963
589. Species Spirogyra pseudofloridana Prescott, 1940 accepted as Sirogonium pseudofloridanum (Prescott) Transeau, 1944
590. Species Spirogyra pseudoneglecta Margalef, 1947 accepted as Spirogyra margalefii Aboal & Llimona, 1984 (synonym)
591. Species Spirogyra punctata Cleve, 1868 accepted as Temnogyra punctata (Cleve) Yamagishi, 1963
592. Species Spirogyra punctiformis Transeau, 1914 accepted as Temnogyra punctiformis (Transeau) Yamagishi, 1963
593. Species Spirogyra quinina (O.F.Müller) Dumortier, 1822 accepted as Spirogyra porticalis (O.F.Müller) Dumortier, 1822
594. Species Spirogyra ramosa Svirenko, 1941 accepted as Spirogyra fluviatilis var. ramosa (Svirenko) Petlovany, 2015
595. Species Spirogyra reflexa Transeau, 1916 accepted as Temnogyra reflexa (Transeau) Yamagishi, 1963
596. Species Spirogyra rupestris Schmidle, 1900 accepted as Spirogyra elongata f. rupestris (Schmidle) V.Poljansky, 1966
597. Species Spirogyra silvicola M.E.Britton, 1944 accepted as Spirogyra singularis Nordstedt, 1880 (synonym)
598. Species Spirogyra singhii H.Krieger, 1944 accepted as Sirogonium indicum R.N.Singh, 1938 (synonym)
599. Species Spirogyra sirogonioides E.O.Hughes, 1948 accepted as Temnogyra sirogonioides (E.O.Hughes) Yamagishi, 1963
600. Species Spirogyra stictica (Smith) Wille, 1884 accepted as Sirogonium sticticum (Smith) Kützing, 1843 (synonym)
601. Species Spirogyra subaequa Kützing accepted as Spirogyra bellis (Hassall) P.Crouan & H.Crouan, 1867 (synonym)
602. Species Spirogyra subarta C.-C.Jao, 1964 accepted as Spirogyra frigida f. arta (C.-C.Jao) C.-C.Jao, 1982
603. Species Spirogyra subvariformis L.-J.Bi, 1979 accepted as Spirogyra porticalis (O.F.Müller) Dumortier, 1822
604. Species Spirogyra subverruculosa Liu, 1980 accepted as Spirogyra tuberculosa Liang & Wang, 1979
605. Species Spirogyra subweberi Wang, 1933 accepted as Spirogyra weberi Kützing, 1843
606. Species Spirogyra suecica Transeau, 1934 accepted as Spirogyra affinis (Hassall) Petit, 1880 (synonym)
607. Species Spirogyra suomaniana Transeau, 1934 accepted as Temnogyra suomiana (Transeau) Yamagishi, 1963
608. Species Spirogyra tenuior (Transeau) Krieger, 1944 accepted as Sirogonium sticticum var. tenuius (Transeau) Petlovany, 2015
609. Species Spirogyra texensis Taft, 1944 accepted as Temnogyra texensis (Taft) Yamagishi, 1963
610. Species Spirogyra tropica (G.S.West) Transeau, 1944 accepted as Spirogyra siamensis Transeau, 1951
611. Species Spirogyra ucrainica Smirnoff, 1914 accepted as Spirogyra heeriana var. ucrainica (Smirnoff) Petlovany, 2015
612. Species Spirogyra ventersica (Transeau) H.Krieger, 1944 accepted as Sirogonium ventersicum Transeau, 1934 (synonym)
613. Species Spirogyra visenda Transeau, 1944 accepted as Temnogyra visenda (Transeau) Yamagishi, 1963
614. Species Spirogyra wabashensis Tiffany, 1927 accepted as Temnogyra wabashensis (Tiffany) Yamagishi, 1963
615. Species Spirogyra westii Transeau, 1934 accepted as Spirogyra daedalea f. africana (G.S.West) V.Poljansky, 1966
616. Species Spirogyra woodsii (Hassal) Czurda, 1932 accepted as Spirogyra varians var. woodsii (Hassall) Petlovany, 2015
617. Species Spirogyra xiangshanensis Liang & Wang, 1979 accepted as Spirogyra daedaleoides Czurda, 1932
618. Species Spirogyra anadpurensis Ropar, 1989 (uncertain)
619. Species Spirogyra calida P.Crouan & H.Crouan, 1878 (uncertain, uncertain taxonomic status subjected to verification)
620. Species Spirogyra chandigarhensis Unknown authority (uncertain)
621. Species Spirogyra inaequalis (Hassall) Kützing, 1849 (uncertain, uncertain taxonomic status subjected to verification)
622. Species Spirogyra kurzii (Zeller) De Toni, 1889 (uncertain, uncertain taxonomic status subjected to verification)
623. Species Spirogyra lucknowensis (Prasad & Dutta) Kadlubowska (uncertain)
624. Species Spirogyra nodosa Kützing, 1855 (uncertain, uncertain taxonomic status subjected to verification)
625. Species Spirogyra rickertii Kadlubowska, 1972 (uncertain, uncertain taxonomic status subjected to verification)
626. Species Spirogyra stagnalis Hilse, 1863 (uncertain, uncertain taxonomic status subjected to verification)
627. Species Spirogyra torulosa Kützing, 1843 (uncertain, uncertain taxonomic status subjected to verification)
628. Species Spirogyra troitzkajae V.I.Poljansky, 1959 (uncertain, uncertain taxonomic status subjected to verification)
629. Species Spirogyra ventricosa Kützing, 1849 (uncertain, uncertain taxonomic status subjected to verification)

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