1. Species Carex abrupta Mack.
2. Species Carex adusta Boott
3. Species Carex alata Torr.
4. Species Carex albolutescens Schwein.
5. Species Carex arapahoensis Clokey
6. Species Carex argyrantha Tuck. ex Boott
7. Species Carex athrostachya Olney
8. Species Carex atlasica (H.Lindb.) Tattou
9. Species Carex balfourii Kük.
10. Species Carex bebbii (L.H.Bailey) Olney ex Fernald
11. Species Carex bicknellii Britton & A.Br.
12. Species Carex bohemica Schreb.
13. Species Carex bonplandii Kunth
14. Species Carex brevior (Dewey) Mack. ex Lunell
15. Species Carex constanceana Stacey
16. Species Carex crawfordii Fernald
17. Species Carex cristatella Britton
18. Species Carex cumulata (L.H.Bailey) Mack.
19. Species Carex curviculmis Reznicek
20. Species Carex davyi Mack.
21. Species Carex ebenea Rydb.
22. Species Carex echinodes (Fernald) P.Rothr., Reznicek & Hipp
23. Species Carex egglestonii Mack.
24. Species Carex festivelloides Reznicek
25. Species Carex festucacea Willd.
26. Species Carex feta L.H.Bailey
27. Species Carex foenea Willd.
28. Species Carex fracta Mack.
29. Species Carex gracilior Mack.
30. Species Carex harfordii Mack.
31. Species Carex haydeniana Olney
32. Species Carex hormathodes Fernald
33. Species Carex hyalina Boott
34. Species Carex iljinii V.I.Krecz.
35. Species Carex integra Mack.
36. Species Carex lagunensis M.E.Jones
37. Species Carex leporina L.
38. Species Carex leporinella Mack.
39. Species Carex longii Mack.
40. Species Carex macloviana d'Urv.
41. Species Carex mandoniana Boeckeler
42. Species Carex marahuacana Reznicek
43. Species Carex mariposana L.H.Bailey ex Mack.
44. Species Carex meridionalis (Kük.) Herter
45. Species Carex merritt-fernaldii Mack.
46. Species Carex michoacana Reznicek, Hipp & S.González
47. Species Carex microptera Mack.
48. Species Carex missouriensis P.Rothr. & Reznicek
49. Species Carex molesta Mack.
50. Species Carex molestiformis Reznicek & Rothrock
51. Species Carex multicostata Mack.
52. Species Carex muskingumensis Schwein.
53. Species Carex neblinensis Reznicek
54. Species Carex normalis Mack.
55. Species Carex opaca (F.J.Herm.) P.Rothr. & Reznicek
56. Species Carex orizabae Liebm.
57. Species Carex oronensis Fernald
58. Species Carex ozarkana P.Rothr. & Reznicek
59. Species Carex pachycarpa Mack.
60. Species Carex pachystachya Cham. ex Steud.
61. Species Carex petasata Dewey
62. Species Carex peucophila Holm
63. Species Carex phaeocephala Piper
64. Species Carex praticola Rydb.
65. Species Carex preslii Steud.
66. Species Carex projecta Mack.
67. Species Carex proposita Mack.
68. Species Carex pseudomacloviana G.A.Wheeler
69. Species Carex purdiei Boott
70. Species Carex reniformis (L.H.Bailey) Small
71. Species Carex roraimensis Steyerm.
72. Species Carex scoparia Schkuhr ex Willd.
73. Species Carex shinnersii P.Rothr. & Reznicek
74. Species Carex silicea Olney
75. Species Carex specifica L.H.Bailey
76. Species Carex stenoptila F.J.Herm.
77. Species Carex straminea Willd. ex Schkuhr
78. Species Carex straminiformis L.H.Bailey
79. Species Carex subbracteata Mack.
80. Species Carex suberecta (Olney) Britton
81. Species Carex subfusca W.Boott
82. Species Carex sychnocephala J.Carey
83. Species Carex tahoensis Smiley
84. Species Carex tenera Dewey
85. Species Carex tetrastachya Scheele
86. Species Carex tincta (Fernald) Fernald
87. Species Carex tolucensis (F.J.Herm.) Reznicek
88. Species Carex toreadora Steyerm.
89. Species Carex tribuloides Wahlenb.
90. Species Carex unilateralis Mack.
91. Species Carex vexans F.J.Herm.
92. Species Carex waponahkikensis Lovit & A.Haines
93. Species Carex wootonii Mack.
94. Species Carex xerantica L.H.Bailey
95. Species Carex amplectens Mack. accepted as Carex fracta Mack. (unaccepted > junior subjective synonym)
96. Species Carex argyrantha Tuck. ex Dewey (uncertain > unassessed)
97. Species Carex interjecta Reznicek (uncertain > taxon inquirendum)

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