1. Species Crucigenia australis (Playfair) Playfair, 1917
2. Species Crucigenia cordata Playfair, 1917
3. Species Crucigenia cruxmichaeli (Reinsch) Playfair, 1917
4. Species Crucigenia emarginata (West & G.S.West) Schmidle, 1900
5. Species Crucigenia excavata W.Conrad, 1949
6. Species Crucigenia fenestrata (Schmidle) Schmidle, 1900
7. Species Crucigenia floralis Playfair, 1917
8. Species Crucigenia mucronata (G.M.Smith) Komárek, 1974
9. Species Crucigenia quadrata Morren, 1830
10. Species Crucigenia quadriseta H.K.F.H.Seckt, 1924
11. Species Crucigenia reniformis Svirenko, 1926
12. Species Crucigenia setifera S.S.Wang, 1990
13. Species Crucigenia smithii (Bourrelly) Komárek, 1974
14. Species Crucigenia unicellularis (Playfair) Playfair, 1917
15. Species Crucigenia variabilis S.S.Wang, 1994
16. Species Crucigenia alternans G.M.Smith, 1926 accepted as Tetrachlorella alternans (G.M.Smith) Korshikov, 1939 (synonym)
17. Species Crucigenia apiculata (Lemmermann) Schmidle, 1900 accepted as Willea apiculata (Lemmermann) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014 (synonym)
18. Species Crucigenia appendiculata (Chodat) Schmidle, 1900 accepted as Komarekia appendiculata (Chodat) Fott, 1981 (synonym)
19. Species Crucigenia cruciata Schmidle, 1900 accepted as Crucigeniella crucifera (Wolle) Komárek, 1974 accepted as Willea crucifera (Wolle) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014 (synonym)
20. Species Crucigenia crucifera (Wolle) O.Kuntze, 1898 accepted as Willea crucifera (Wolle) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014 (synonym)
21. Species Crucigenia cubica (P.F.Reinsch) Kuntze, 1898 accepted as Staurogenia cubica Reinsch, 1877
22. Species Crucigenia cuneiformis (Schmidle) J.Brunnthaler, 1915 accepted as Dispora cuneiformis (Schmidle) Printz, 1914
23. Species Crucigenia divergens G.M.Smith, 1926 accepted as Crucigeniopsis divergens (G.M.Smith) Hindák, 1984 (synonym)
24. Species Crucigenia hastifera Arnoldi, 1924 accepted as Tetrastrum hastiferum (Arnoldi) Korshikov, 1953
25. Species Crucigenia heteracantha (Nordstedt) Kuntze, 1898 accepted as Tetrastrum heteracanthum (Nordstedt) Chodat, 1895
26. Species Crucigenia hofmaniana Chodat, 1902 accepted as Crucigenia triangularis (Chodat) Schmidle, 1900 accepted as Lemmermannia triangularis (Chodat) C.Bock & Krienitz, 2013
27. Species Crucigenia irregularis Wille, 1898 accepted as Crucigeniella irregularis (Wille) P.M.Tsarenko & D.M.John, 2002 accepted as Willea irregularis (Wille) Schmidle, 1900 (synonym)
28. Species Crucigenia lauterbornii (Schmidle) Schmidle, 1900 accepted as Lemmermannia komarekii (Hindák) C.Bock & Krienitz, 2013
29. Species Crucigenia lunaris (Lemmermann) Wille, 1909 accepted as Crucigeniella lunaris Lemmermann, 1900
30. Species Crucigenia minima (Fitschen) Brunnthaler, 1915 accepted as Tetrastrum triangulare (Chodat) Komárek, 1974 accepted as Lemmermannia triangularis (Chodat) C.Bock & Krienitz, 2013 (synonym)
31. Species Crucigenia mitrae G.L.Tiwari & D.C.Pandey, 1971 accepted as Asterarcys quadricellularis (K.Behre) E.Hegewald & A.W.F.Schmidt, 1992 (synonym)
32. Species Crucigenia multiseta (Schmidle) Schmidle, 1900 accepted as Micractinium pusillum Fresenius, 1858 (synonym)
33. Species Crucigenia neglecta Fott & H.Ettl, 1959 accepted as Willea neglecta (Fott & H.Ettl) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014
34. Species Crucigenia pulchra West & G.S.West, 1902 accepted as Crucigeniella apiculata (Lemmermann) Komárek, 1974 accepted as Willea apiculata (Lemmermann) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014
35. Species Crucigenia punctata (Schmidle) C.-C.Jao & Z.Y.Hu, 1996 accepted as Lemmermannia punctata (Schmidle) C. Bock & Krienitz, 2013 (synonym)
36. Species Crucigenia rectangularis (Nägeli) Gay, 1891 accepted as Willea rectangularis (A.Braun) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014
37. Species Crucigenia schroederi (Schmidle) Schmidle, 1900 accepted as Tetrastrum staurogeniiforme (Schröder) Lemmermann, 1900
38. Species Crucigenia staurogeniaeformis (J.L.B.Schröder) J.N.F.Wille, 1909 accepted as Tetrastrum staurogeniiforme (Schröder) Lemmermann, 1900
39. Species Crucigenia tetrapedia (Kirchner) Kuntze, 1898 accepted as Lemmermannia tetrapedia (Kirchner) Lemmermann, 1904
40. Species Crucigenia triangularis (Chodat) Schmidle, 1900 accepted as Lemmermannia triangularis (Chodat) C.Bock & Krienitz, 2013 (synonym)
41. Species Crucigenia truncata G.M.Smith, 1920 accepted as Willea truncata (G.M.Smith) D.M.John, M.J.Wynne & P.M.Tsarenko, 2014
42. Species Crucigenia alpina (Schmidle) Schmidle, 1900 (uncertain)
43. Species Crucigenia andicola T.G.Tutin, 1940 (uncertain)
44. Species Crucigenia antarctica Wille, 1924 (uncertain)
45. Species Crucigenia laxa T.Hortobágyi, 1980 (uncertain)
46. Species Crucigenia mitrii G.L.Tiwari & D.C.Pandey (uncertain)
47. Species Crucigenia piriformis G.Beck Mannagetta (uncertain)
48. Species Crucigenia reniformis B.M.Griffiths, 1916 (uncertain)

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