1. Species Bostrychia acicarpa J.Agardh
2. Species Bostrychia adhaerens Reinsch
3. Species Bostrychia anomala J.A.West, Loiseaux-de Goër & Zuccarello, 2013
4. Species Bostrychia arbuscula W.H.Harvey, 1855
5. Species Bostrychia australiana J.A.West, Zuccarello & Loiseaux-de Goër, 2023
6. Species Bostrychia binderi Harvey, 1849
7. Species Bostrychia bipinnata Harvey ex J.Agardh
8. Species Bostrychia bispora J.West & G.Zuccarello, 1992
9. Species Bostrychia bryophila Zanardini
10. Species Bostrychia caespitula J.Agardh
11. Species Bostrychia calliptera (Montagne) Montagne, 1842
12. Species Bostrychia cornigera Montagne
13. Species Bostrychia crassula Heydrich
14. Species Bostrychia disticha J.Agardh
15. Species Bostrychia filicula Harvey
16. Species Bostrychia flagellifera Post, 1936
17. Species Bostrychia fulcrata Zanardini
18. Species Bostrychia glomerata J.Agardh
19. Species Bostrychia gracilis (R.J.King & Puttock) Zuccarello & J.A.West, 2006
20. Species Bostrychia hamanae-tokidae
21. Species Bostrychia hamana-tokidae Post, 1941
22. Species Bostrychia harveyi Montagne, 1852
23. Species Bostrychia hongkongensis C.K.Tseng, 1943
24. Species Bostrychia intricata (Bory) Montagne, 1852
25. Species Bostrychia jelineckii Grunow
26. Species Bostrychia kaernbachii Grunow
27. Species Bostrychia kelanensis Grunow, 1936
28. Species Bostrychia kingii Zuccarello, J.A.West & M.Kamiya, 2017
29. Species Bostrychia kraussii Harvey
30. Species Bostrychia laingii J.Agardh
31. Species Bostrychia lauterbachii (Askenasy & Schmidle) Goebel
32. Species Bostrychia lepida Montagne
33. Species Bostrychia leptoclada Montagne, 1850
34. Species Bostrychia mamillosa Kützing
35. Species Bostrychia monosiphonia Montagne
36. Species Bostrychia montagnei Harvey, 1853
37. Species Bostrychia moritziana (Sonder ex Kützing) J.Agardh, 1863
38. Species Bostrychia multicornis (Montagne) J.Agardh
39. Species Bostrychia nigrescens F.v.Mueller, 1989
40. Species Bostrychia pannosa J.Agardh
41. Species Bostrychia pauperula Grunow
42. Species Bostrychia pectinata (Kützing) Mazza
43. Species Bostrychia periclados (C.Agardh) J.Agardh
44. Species Bostrychia pilulifera Montagne, 1842
45. Species Bostrychia radicans (Montagne) Montagne, 1842
46. Species Bostrychia radicosa (Itono) J.A.West, G.C.Zuccarello & M.H.Hommersand, 2006
47. Species Bostrychia scorpioides (Hudson) Montagne, 1842
48. Species Bostrychia sertularia Montagne, 1859
49. Species Bostrychia siliquis J.Agardh
50. Species Bostrychia simplicipila Zanardini
51. Species Bostrychia simpliciuscula Harvey ex J.Agardh, 1863
52. Species Bostrychia siphonoides P.L.Crouan & H.M.Crouan
53. Species Bostrychia sonderiana Grunow
54. Species Bostrychia tangatensis Post, 1939
55. Species Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863
56. Species Bostrychia tenuissima R.J.King & Puttock, 1989
57. Species Bostrychia vaga Hooker f. & Harvey, 1845
58. Species Bostrychia wardii W.H.Harvey ex J.Agardh
59. Species Bostrychia amphibia (Stackhouse) Montagne accepted as Bostrychia scorpioides (Hudson) Montagne, 1842
60. Species Bostrychia anceps (Lamarck) Decaisne accepted as Amphiroa anceps (Lamarck) Decaisne, 1842
61. Species Bostrychia andoi Okamura, 1907 accepted as Bostrychia simpliciuscula Harvey ex J.Agardh, 1863
62. Species Bostrychia australasica Sonder, 1855 accepted as Bostrychia harveyi Montagne, 1852
63. Species Bostrychia calamistrata (Montagne) Montagne, 1842 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863
64. Species Bostrychia dichotoma Tokida, 1938 accepted as Stictosiphonia intricata (Bory de Saint-Vincent) P.C.Silva, 1996 accepted as Bostrychia intricata (Bory) Montagne, 1852
65. Species Bostrychia distans Harvey, 1855 accepted as Bostrychia harveyi Montagne, 1852
66. Species Bostrychia elegans P.L.Crouan & H.M.Crouan, 1865 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863 (synonym)
67. Species Bostrychia fastigiata Hooker f. & Harvey, 1845 accepted as Stictosiphonia intricata (Bory de Saint-Vincent) P.C.Silva, 1996 accepted as Bostrychia intricata (Bory) Montagne, 1852
68. Species Bostrychia floccosa (Esper) Montagne, 1842 accepted as Odonthalia floccosa (Esper) Falkenberg, 1901 (synonym)
69. Species Bostrychia guadelupensis P.L.Crouan & H.M.Crouan, 1865 accepted as Bostrychia moritziana (Sonder ex Kützing) J.Agardh, 1863
70. Species Bostrychia hookeri Harvey, 1845 accepted as Bostrychia intricata (Bory) Montagne, 1852
71. Species Bostrychia mazei P.L.Crouan & H.M.Crouan, 1865 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863
72. Species Bostrychia mixta Hooker f. & Harvey, 1845 accepted as Bostrychia intricata (Bory) Montagne, 1852
73. Species Bostrychia muscoides P.L.Crouan & H.M.Crouan, 1865 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863
74. Species Bostrychia novae-zelandiae J.Agardh accepted as Aphanocladia delicatula (Hooker f. & Harvey) Falkenberg, 1897
75. Species Bostrychia pinnata J.Tanaka & Chihara, 1984 accepted as Bostrychia calliptera (Montagne) Montagne, 1842 (synonym)
76. Species Bostrychia polysiphonioides P.L.Crouan & H.M.Crouan, 1865 accepted as Bostrychia moritziana (Sonder ex Kützing) J.Agardh, 1863
77. Species Bostrychia rivularis Harvey, 1853 accepted as Bostrychia radicans (Montagne) Montagne, 1842
78. Species Bostrychia tenuis Post, 1936 accepted as Bostrychia simpliciuscula Harvey ex J.Agardh, 1863
79. Species Bostrychia terrestris (J.Agardh) Harvey ex Zanardini, 1872 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863
80. Species Bostrychia tuomeyi Harvey, 1853 accepted as Murrayella periclados (C.Agardh) F.Schmitz, 1893 (synonym)
81. Species Bostrychia vieillardii Kützing, 1863 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863
82. Species Bostrychia capensis Setchell (uncertain)
83. Species Bostrychia capillacea P.L.Crouan & H.M.Crouan (uncertain)
84. Species Bostrychia dasyiformis (P.Crouan & H.Crouan) P.Crouan & H.Crouan (uncertain)
85. Species Bostrychia exigua Setchell (uncertain)
86. Species Bostrychia leprieurii Montagne (uncertain)
87. Species Bostrychia similis Reinbold (uncertain)
88. Species Bostrychia vulgaris Haufe (uncertain)

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