1. Species Brachysira altepetlensis D.Mora, R.Jahn & N.Abarca, 2017
2. Species Brachysira aristidesii Zorzal-Almeida, Bartozek & D. Bicudo in Zorzal-Almeida et al., 2020
3. Species Brachysira atacamae (Hustedt) D.G.Mann, 1990 †
4. Species Brachysira guarrerai Vouilloud et al., 2014
5. Species Brachysira hedyklingiae D.Metzeltin & H-Lange-Bertalot, 2007 †
6. Species Brachysira heteropolaris Van de Vijver, 2023
7. Species Brachysira huitotarum Vouilloud et al., 2014
8. Species Brachysira minor (Krasske) H. Lange-Bertalot, 1994
9. Species Brachysira sandrae Van de Vijver, 2014
10. Species Brachysira subtilis M.G.Potapova, P.B.Hamilton & L.I.Kopyrina, 2014
11. Species Brachysira brebissonii R.Ross, 1986 accepted as Brachysira brebissonii f. brebissonii R.Ross, 1986
12. Species Brachysira acutirhomboides Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
13. Species Brachysira acutissima Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
14. Species Brachysira amoena Lange-Bertalot, 1994 (uncertain > unassessed)
15. Species Brachysira angusta H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
16. Species Brachysira angustior (G.Moser, Lange-Bertalot & D.Metzeltin) D.Metzeltin & H-Lange-Bertalot, 2007 accepted as Brachysira australofollis var. angustior Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
17. Species Brachysira apiculata (Boyer) Lange-Bertalot & Gerd Moser, 1994 accepted as Anomoeoneis serians var. apiculata Boyer, 1927 (uncertain > unassessed)
18. Species Brachysira aponina Kützing, 1836 (uncertain > unassessed)
19. Species Brachysira archibaldii M. Coste & M. Ricard, 1982 (uncertain > unassessed)
20. Species Brachysira arctoborealis A.P. Wolfe & H.J. Kling, 2001 (uncertain > unassessed)
21. Species Brachysira australofollis Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
22. Species Brachysira babuschka Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
23. Species Brachysira bacillifer Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
24. Species Brachysira blancheana (Maillard) Lange-Bertalot & Gerd Moser (uncertain > unassessed)
25. Species Brachysira bouletiana Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
26. Species Brachysira brebissonii H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
27. Species Brachysira calcicola Lange-Bertalot, 1994 (uncertain > unassessed)
28. Species Brachysira calligraphica Lange-Bertalot, 1994 (uncertain > unassessed)
29. Species Brachysira carabogazgolensis Bulatov, 2020 (uncertain > taxon inquirendum, Likely invalid.)
30. Species Brachysira charlesreimeri D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
31. Species Brachysira complanata (Grunow) Kuntze, 1891 accepted as Amphora complanata Grunow, 1867 (uncertain > unassessed)
32. Species Brachysira constricta (Ehrenberg) Kuntze, 1891 accepted as Amphiprora constricta Ehrenberg, 1843 (uncertain > unassessed)
33. Species Brachysira coraliana D.Metzeltin & Lange-Bertalot, 1998 (uncertain > unassessed)
34. Species Brachysira cymbelliformis D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
35. Species Brachysira delicatissima D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
36. Species Brachysira dumbeana (R.Maillard) Lange-Bertalot & Gerd Moser (uncertain > unassessed)
37. Species Brachysira elliptica D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
38. Species Brachysira estonarium A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 (uncertain > unassessed)
39. Species Brachysira exilis (Kützing) Round & D.G.Mann, 1981 accepted as Navicula exilis f. exilis Kützing, 1844 (uncertain > unassessed)
40. Species Brachysira feickertiae H. Lange-Bertalot & G. Moser in G. Moser, A. Steindorf & H. Lange-Bertalot, 1995 (uncertain > unassessed)
41. Species Brachysira follis (Ehrenberg) R.Ross, 1986 accepted as Navicula follis Ehrenberg, 1838 † (uncertain > unassessed)
42. Species Brachysira formidulosa (Cholnoky) Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
43. Species Brachysira fossilis (Reimer) Lange-Bertalot & Gerd Moser, 1994 † accepted as Anomoeoneis follis var. fossilis Reimer, 1961 † (uncertain > unassessed)
44. Species Brachysira frenguellii (Manguin) H. Lange-Bertalot & G. Moser, 1994 accepted as Anomoeoneis frenguellii Manguin in Bourrelly & Manguin, 1952 (uncertain > unassessed)
45. Species Brachysira garrensis (Lange-Bertalot & Krammer) Lange-Bertalot, 1994 accepted as Anomoeoneis garrensis Lange-Bertalot & Krammer, 1985 (uncertain > unassessed)
46. Species Brachysira gomphonemoides (Maillard) Lange-Bertalot & Gerd Moser (uncertain > unassessed)
47. Species Brachysira gravida H.A.Shayler & P.A.Siver, 2004 (uncertain > unassessed)
48. Species Brachysira grevillei (Agardh) Kuntze, 1891 accepted as Schizonema grevillei var. grevillei Agardh, 1830 (uncertain > unassessed)
49. Species Brachysira guttiformis Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
50. Species Brachysira hamulifera (Grunow) Kuntze, 1891 accepted as Navicula hamulifera var. hamulifera Grunow in Cleve & Grunow, 1880 (uncertain > unassessed)
51. Species Brachysira hannae (Reimer) Lange-Bertalot & Gerd Moser, 1994 † accepted as Anomoeoneis follis var. hannae Reimer, 1961 † (uncertain > unassessed)
52. Species Brachysira hedykligiae D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain > unassessed)
53. Species Brachysira hofmanniae Lange-Bertalot, 1994 (uncertain > unassessed)
54. Species Brachysira inamoena D.Metzeltin & Lange-Bertalot, 1998 (uncertain > unassessed)
55. Species Brachysira incognita Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
56. Species Brachysira inflata Lange-Bertalot, 1994 (uncertain > unassessed)
57. Species Brachysira insolita Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
58. Species Brachysira insulsa D.Metzeltin & Lange-Bertalot, 1998 (uncertain > unassessed)
59. Species Brachysira intermedia (Østrup) Lange-Bertalot, 1994 accepted as Anomoeoneis intermedia Østrup, 1910 (uncertain > unassessed)
60. Species Brachysira irawanae (Podzorski & Håkansson) H. Lange-Bertalot & A.C. Podzorski in H. Lange-Bertalot & G. Moser, 1994 accepted as Anomoeoneis irawanae Podzorski & Håkansson, 1987 (uncertain > unassessed)
61. Species Brachysira irawanoides H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
62. Species Brachysira jankae D.Metzeltin & Lange-Bertalot, 2007 (uncertain > unassessed)
63. Species Brachysira julio Lange-Bertalot, 1994 (uncertain > unassessed)
64. Species Brachysira krammeri Lange-Bertalot, 1994 (uncertain > unassessed)
65. Species Brachysira kuntzei (Reichelt) D.Metzeltin & Lange-Bertalot, 1998 accepted as Navicula kuntzei Reichelt, 1898 (uncertain > unassessed)
66. Species Brachysira labrata Lange-Bertalot & Gerd Moser (uncertain > unassessed)
67. Species Brachysira lange-bertalotii D.Metzeltin, 1998 (uncertain > unassessed)
68. Species Brachysira lecohui Lange-Bertalot, 1994 (uncertain > unassessed)
69. Species Brachysira lehmanniae Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
70. Species Brachysira liliana Lange-Bertalot, 1994 (uncertain > unassessed)
71. Species Brachysira linearilanceolata D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
72. Species Brachysira longirostris (Hustedt) D.G.Mann, 1990 accepted as Anomoeoneis longirostris Hustedt, 1942 (uncertain > unassessed)
73. Species Brachysira macroserians D.Metzeltin & Lange-Bertalot, 1998 (uncertain > unassessed)
74. Species Brachysira maillardii Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
75. Species Brachysira manfredii H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
76. Species Brachysira manoylovae D.Metzeltin & Lange-Bertalot, 2007 (uncertain > unassessed)
77. Species Brachysira metzeltinii Lange-Bertalot, 1994 (uncertain > unassessed)
78. Species Brachysira microcephala (Grunow) Compère, 1986 accepted as Navicula microcephala var. microcephala Grunow, 1867 (uncertain > unassessed)
79. Species Brachysira microclava Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
80. Species Brachysira microserians D.Metzeltin & Lange-Bertalot, 1998 (uncertain > unassessed)
81. Species Brachysira nanoclava Gerd Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain > unassessed)
82. Species Brachysira neglectissima Lange-Bertalot, 2004 (uncertain > unassessed)
83. Species Brachysira neoacuta Lange-Bertalot, 1994 (uncertain > unassessed)
84. Species Brachysira neocaledonica H. Lange-Bertalot & G. Moser, 1994 accepted as Anomoeoneis neocaledonica Maillard, 1978 (uncertain > unassessed)
85. Species Brachysira neocaledonica R. Le Cohu, 1985 (uncertain > unassessed)
86. Species Brachysira neoexilis Lange-Bertalot, 1994 (uncertain > unassessed)
87. Species Brachysira nubigena Lange-Bertalot, 1994 (uncertain > unassessed)
88. Species Brachysira obesa H. Lange-Bertalot & G. Moser in in G. Moser, A. Steindorf & H. Lange-Bertalot, 1995 (uncertain > unassessed)
89. Species Brachysira ocalensis H.A. Shayler & P.A. Siver, 2004 (uncertain > unassessed)
90. Species Brachysira palustris (Maillard) G. Moser, A. Steindorf & H. Lange-Bertalot, 1995 accepted as Anomoeoneis palustris Maillard, 1978 (uncertain > unassessed)
91. Species Brachysira plicata (Ehrenberg) Kuntze, 1891 accepted as Navicula plicata f. plicata Ehrenberg, 1858 (uncertain > unassessed)
92. Species Brachysira potapovae D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
93. Species Brachysira procera Lange-Bertalot & Gerd Moser, 1994 (uncertain > unassessed)
94. Species Brachysira pseudoacuta H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
95. Species Brachysira pseudoexilis H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
96. Species Brachysira pulchra H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
97. Species Brachysira pumila G. Metzeltin & H. Lange-Bertalot, 1998 (uncertain > unassessed)
98. Species Brachysira rhombica (Gregory) Kuntze, 1891 accepted as Navicula rhombica f. rhombica Gregory, 1855 (uncertain > unassessed)
99. Species Brachysira rhombica D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
100. Species Brachysira rhomboides (Hustedt) D.G.Mann, 1990 accepted as Anomoeoneis rhomboides Hustedt, 1942 (uncertain > unassessed)
101. Species Brachysira rostrata (Krasske) G. Metzeltin & H. Lange-Bertalot, 1998 accepted as Anomoeoneis serians var. rostrata Krasske, 1948 (uncertain > unassessed)
102. Species Brachysira ruckiae D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
103. Species Brachysira rumrichiae H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
104. Species Brachysira ruppeliana G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 (uncertain > unassessed)
105. Species Brachysira santoriniensis H. Lange-Bertalot & G. Moser (uncertain > unassessed)
106. Species Brachysira seippii H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
107. Species Brachysira serians (Brébisson) Round & D.G.Mann, 1981 accepted as Frustulia serians Brébisson, 1838 (uncertain > unassessed)
108. Species Brachysira silvicola H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
109. Species Brachysira simplex H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
110. Species Brachysira sinaiensis H. Lange-Bertalot in Werum & Lange-Bertalot, 2004 (uncertain > unassessed)
111. Species Brachysira spectabilis (Manguin) H. Lange-Bertalot & G. Moser, 1994 accepted as Anomoeoneis spectabilis Manguin, 1942 (uncertain > unassessed)
112. Species Brachysira speluncola H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
113. Species Brachysira spicula G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 (uncertain > unassessed)
114. Species Brachysira starmuehlneri (R.Maillard) Gerd Moser, Lange-Bertalot & Metzeltin accepted as Anomoeoneis starmuhlneri Maillard, 1978 (uncertain > unassessed)
115. Species Brachysira staurophora M.G.M.Souza & Compère, 1999 (uncertain > unassessed)
116. Species Brachysira steindorfiana G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 (uncertain > unassessed)
117. Species Brachysira steinitziae G. Metzeltin & H. Lange-Bertalot, 1998 (uncertain > unassessed)
118. Species Brachysira styriaca (Grunow) R.Ross, 1986 accepted as Navicula styriaca Grunow, 1880 (uncertain > unassessed)
119. Species Brachysira sublinearis G. Metzeltin & H. Lange-Bertalot, 1998 (uncertain > unassessed)
120. Species Brachysira subrostrata H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
121. Species Brachysira superba (H. Lange-Bertalot & G. Moser) G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 accepted as Brachysira brebissonii H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
122. Species Brachysira superserians D.Metzeltin & Lange-Bertalot, 2007 † (uncertain > unassessed)
123. Species Brachysira supriniana G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 (uncertain > unassessed)
124. Species Brachysira tenuiserians H. Lange-Bertalot in H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
125. Species Brachysira trinodis H. Lange-Bertalot & G. Moser, 1994 (uncertain > unassessed)
126. Species Brachysira venter H. Lange-Bertalot & G. Moser in G. Moser, A. Steindorf & H. Lange-Bertalot, 1995 (uncertain > unassessed)
127. Species Brachysira vitrea (Grunow) R.Ross, 1986 accepted as Gomphonema vitreum Grunow, 1878 (uncertain > unassessed)
128. Species Brachysira vixapiculata D.Metzeltin & Lange-Bertalot, 2007 (uncertain > unassessed)
129. Species Brachysira wolfei D.Metzeltin & H-Lange-Bertalot, 2007 † (uncertain > unassessed)
130. Species Brachysira wygaschii Lange-Bertalot, 1994 (uncertain > unassessed)
131. Species Brachysira zellensis (Grunow) Round & D.G.Mann, 1981 accepted as Navicula zellensis var. zellensis Grunow, 1860 (uncertain > unassessed)

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