| Carex petasata Dewey | | a | | Carex petasata Dewey | | 8472 | |
| Carex abrupta Mack. | | a | | Carex abrupta Mack. | | 9026 | |
| Carex acuta L. var. nigra L. | Carex nigra (L.) Reichard | | i | Carex acuta L. var.nigra L. | Carex nigra (L.) Reichard | 9027 | 9092 |
| Carex aenea Fernald | Carex foenea Willd. | | | Carex aenea Fernald | Carex foenea Willd. | 9028 | 9061 |
| Carex aquatilis Wahlenb. | | a | | Carex aquatilis Wahlenb. | | 9029 | |
| Carex aquatilis Wahlenb. var. substricta Kük. | | a | i | Carex aquatilis Wahlenb. var.substricta Kük. | | 9030 | |
| Carex arcta Boott | | a | | Carex arcta Boott | | 9031 | |
| Carex athrostachya Olney | | a | | Carex athrostachya Olney | | 9032 | |
| Carex atrata L. | | a | | Carex atrata L. | | 9033 | |
| Carex atrosquama Mack. | | a | | Carex atrosquama Mack. | | 9034 | |
| Carex aurea Nutt. | | a | | Carex aurea Nutt. | | 9035 | |
| Carex baccans Nees | | a | | Carex baccans Nees | | 9036 | |
| Carex bebbii (L. H. Bailey) Olney ex Fernald | | a | | Carex bebbii (L. H. Bailey) Olney ex Fernald | | 9037 | |
| Carex barbarae Dewey | | a | | Carex barbarae Dewey | | 9038 | |
| Carex bonariensis Desf. ex Poir. | | a | | Carex bonariensis Desf. ex Poir. | | 9039 | |
| Carex bordzilowskii V. I. Krecz. | Carex liparocarpos Gaudin subsp. bordzilowskii (V. I. Krecz.) T. V. Egorova | | | Carex bordzilowskii V. I. Krecz. | Carex liparocarpos Gaudin subsp. bordzilowskii (V. I. Krecz.) T. V. Egorova | 9040 | 409332 |
| Carex brevior (Dewey) Mack. ex Lunell | | a | | Carex brevior (Dewey) Mack. ex Lunell | | 9041 | |
| Carex brevipes W. Boott ex B. D. Jacks. | Carex deflexa Hornem. var. boottii L. H. Bailey | | | Carex brevipes W. Boott ex B. D. Jacks. | Carex deflexa Hornem. var.boottii L. H. Bailey | 9042 | 433419 |
| Carex buxbaumii Wahlenb. | | a | | Carex buxbaumii Wahlenb. | | 9043 | |
| Carex canescens L. | | a | | Carex canescens L. | | 9044 | |
| Carex capillaris L. | | a | | Carex capillaris L. | | 9045 | |
| Carex cataractae R. Br. | | a | | Carex cataractae R. Br. | | 9046 | |
| Carex chimaphila Holm | Carex scopulorum Holm var. scopulorum | | | Carex chimaphila Holm | Carex scopulorum Holm var.scopulorum | 9047 | 417205 |
| Carex cruciata Wahlenb. | | a | | Carex cruciata Wahlenb. | | 9048 | |
| Carex cusickii Mack. ex Piper ex Beattie | | a | | Carex cusickii Mack. ex Piper ex Beattie | | 9049 | |
| Carex desertorum (Litv.) Litv. | Carex pachystylis J. Gay | | | Carex desertorum (Litv.) Litv. | Carex pachystylis J. Gay | 9050 | 9097 |
| Carex diandra Schrank | | a | | Carex diandra Schrank | | 9051 | |
| Carex disperma Dewey | | a | | Carex disperma Dewey | | 9052 | |
| Carex divisa Huds. | | a | | Carex divisa Huds. | | 9053 | |
| Carex douglasii Boott | | a | | Carex douglasii Boott | | 9054 | |
| Carex egglestonii Mack. | | a | | Carex egglestonii Mack. | | 9056 | |
| Carex eurystachya F. J. Herm. | Carex lenticularis Michx. var. dolia (M. E. Jones) L. A. Standl. | | | Carex eurystachya F. J. Herm. | Carex lenticularis Michx. var.dolia (M. E. Jones) L. A. Standl. | 9058 | 417211 |
| Carex flava L. | | a | | Carex flava L. | | 9059 | |
| Carex flavocuspis Franch. & Sav. | | a | | Carex flavocuspis Franch. & Sav. | | 9060 | |
| Carex foenea Willd. | | a | | Carex foenea Willd. | | 9061 | |
| Carex fusanensis Ohwi | Carex gifuensis Franch. | | | Carex fusanensis Ohwi | Carex gifuensis Franch. | 9062 | 433442 |
| Carex geyeri Boott | | a | | Carex geyeri Boott | | 9063 | |
| Carex haydeniana Olney | | a | | Carex haydeniana Olney | | 9064 | |
| Carex hoodii Boott | | a | | Carex hoodii Boott | | 9065 | |
| Carex hookeriana Dewey | | a | | Carex hookeriana Dewey | | 9066 | |
| Carex idahoa L. H. Bailey | | a | | Carex idahoa L. H. Bailey | | 9067 | |
| Carex illota L. H. Bailey | | a | | Carex illota L. H. Bailey | | 9068 | |
| Carex inops L. H. Bailey | | a | | Carex inops L. H. Bailey | | 9069 | |
| Carex interior L. H. Bailey | | a | | Carex interior L. H. Bailey | | 9070 | |
| Carex interior L. H. Bailey f. keweenawensis (F. J. Herm.) Fernald | Carex interior L. H. Bailey | | i | Carex interior L. H. Bailey f. keweenawensis (F. J. Herm.) Fernald | Carex interior L. H. Bailey | 9071 | 9070 |
| Carex interior L. H. Bailey var. keweenawensis F. J. Herm. | Carex interior L. H. Bailey | | i | Carex interior L. H. Bailey var.keweenawensis F. J. Herm. | Carex interior L. H. Bailey | 9072 | 9070 |
| Carex kelloggii W. Boott | Carex lenticularis Michx. var. lipocarpa (Holm) L. A. Standl. | | | Carex kelloggii W. Boott | Carex lenticularis Michx. var.lipocarpa (Holm) L. A. Standl. | 9073 | 417213 |
| Carex kobomugi Ohwi | | a | | Carex kobomugi Ohwi | | 9074 | |
| Carex laeviculmis Meinsh. | | a | | Carex laeviculmis Meinsh. | | 9075 | |
| Carex lanuginosa auct. | Carex pellita Muhl. ex Willd. | | | Carex lanuginosa auct. | Carex pellita Muhl. ex Willd. | 9076 | 433424 |
| Carex lasiocarpa Ehrh. | | a | | Carex lasiocarpa Ehrh. | | 9077 | |
| Carex lasiocarpa Ehrh. var. latifolia (Boeck.) Gilly | Carex pellita Muhl. ex Willd. | | i | Carex lasiocarpa Ehrh. var.latifolia (Boeck.) Gilly | Carex pellita Muhl. ex Willd. | 9078 | 433424 |
| Carex leporinella Mack. | | a | | Carex leporinella Mack. | | 9079 | |
| Carex leptalea Wahlenb. | | a | | Carex leptalea Wahlenb. | | 9080 | |
| Carex leptopoda Mack. | | a | | Carex leptopoda Mack. | | 9081 | |
| Carex limnophila F. J. Herm. | Carex microptera Mack. | | | Carex limnophila F. J. Herm. | Carex microptera Mack. | 9082 | 9087 |
| Carex limosa L. | | a | | Carex limosa L. | | 9083 | |
| Carex media R. Br. ex Richardson | | a | | Carex media R. Br. ex Richardson | | 9084 | |
| Carex mendocinensis Olney ex W. Boott | | a | | Carex mendocinensis Olney ex W. Boott | | 9085 | |
| Carex mertensii J. D. Prescott ex Bong. | | a | | Carex mertensii J. D. Prescott ex Bong. | | 9086 | |
| Carex microptera Mack. | | a | | Carex microptera Mack. | | 9087 | |
| Carex morrowii Boott | | a | | Carex morrowii Boott | | 9088 | |
| Carex multicostata Mack. | | a | | Carex multicostata Mack. | | 9089 | |
| Carex nebrascensis Dewey | | a | | Carex nebrascensis Dewey | | 9090 | |
| Carex neurophora Mack. | | a | | Carex neurophora Mack. | | 9091 | |
| Carex nigra (L.) Reichard | | a | | Carex nigra (L.) Reichard | | 9092 | |
| Carex nigricans C. A. Mey. | | a | | Carex nigricans C. A. Mey. | | 9093 | |
| Carex nubigena D. Don ex Tilloch & Taylor | | a | | Carex nubigena D. Don ex Tilloch & Taylor | | 9094 | |
| Carex occidentalis L. H. Bailey | | a | | Carex occidentalis L. H. Bailey | | 9095 | |
| Carex pachystachya Cham. ex Steud. | | a | | Carex pachystachya Cham. ex Steud. | | 9096 | |
| Carex pachystylis J. Gay | | a | | Carex pachystylis J. Gay | | 9097 | |
| Carex pendula Huds. | | a | | Carex pendula Huds. | | 9098 | |
| Carex phaeocephala Piper | | a | | Carex phaeocephala Piper | | 9099 | |
| Carex physodes M. Bieb. | | a | | Carex physodes M. Bieb. | | 9101 | |
| Carex podocarpa R. Br. ex Richardson | | a | | Carex podocarpa R. Br. ex Richardson | | 9102 | |
| Carex praecox Jacq. | Carex caryophyllea Latourr. | | | Carex praecox Jacq. | Carex caryophyllea Latourr. | 9103 | 409624 |
| Carex praegracilis W. Boott | | a | | Carex praegracilis W. Boott | | 9104 | |
| Carex praticola Rydb. | | a | | Carex praticola Rydb. | | 9105 | |
| Carex praticola Rydb. var. subcoriacea F. J. Herm. | Carex praticola Rydb. | | i | Carex praticola Rydb. var.subcoriacea F. J. Herm. | Carex praticola Rydb. | 9106 | 9105 |
| Carex preslii Steud. | | a | | Carex preslii Steud. | | 9107 | |
| Carex pumila Thunb. | | a | | Carex pumila Thunb. | | 9108 | |
| Carex pyrenaica Wahlenb. | | a | | Carex pyrenaica Wahlenb. | | 9109 | |
| Carex raymondii Calder | Carex atratiformis Britton | | | Carex raymondii Calder | Carex atratiformis Britton | 9110 | 433426 |
| Carex raynoldsii Dewey | | a | | Carex raynoldsii Dewey | | 9111 | |
| Carex remota L. | | a | | Carex remota L. | | 9112 | |
| Carex rossii Boott | | a | | Carex rossii Boott | | 9113 | |
| Carex rostrata Stokes | | a | | Carex rostrata Stokes | | 9114 | |
| Carex rhynchophysa C. A. Mey. | | a | | Carex rhynchophysa C. A. Mey. | | 9115 | |
| Carex sartwellii Dewey | | a | | Carex sartwellii Dewey | | 9116 | |
| Carex scirpiformis Mack. | Carex scirpoidea Michx. subsp. scirpoidea | | | Carex scirpiformis Mack. | Carex scirpoidea Michx. subsp. scirpoidea | 9117 | 433428 |
| Carex scopulorum Holm var. chimaphila (Holm) Kük. | Carex scopulorum Holm var. scopulorum | | i | Carex scopulorum Holm var.chimaphila (Holm) Kük. | Carex scopulorum Holm var.scopulorum | 9118 | 417205 |
| Carex simulata Mack. | | a | | Carex simulata Mack. | | 9119 | |
| Carex sprengelii Dewey ex Spreng. | | a | | Carex sprengelii Dewey ex Spreng. | | 9120 | |
| Carex stenophylla Wahlenb. | | a | | Carex stenophylla Wahlenb. | | 9121 | |
| Carex stenoptila F. J. Herm. | | a | | Carex stenoptila F. J. Herm. | | 9122 | |
| Carex stipata Muhl. ex Willd. | | a | | Carex stipata Muhl. ex Willd. | | 9123 | |
| Carex straminea Willd. ex Schkuhr var. brevior Dewey | Carex brevior (Dewey) Mack. ex Lunell | | i | Carex straminea Willd. ex Schkuhr var.brevior Dewey | Carex brevior (Dewey) Mack. ex Lunell | 9124 | 9041 |
| Carex substricta (Kük.) Mack. | Carex aquatilis Wahlenb. var. substricta Kük. | | | Carex substricta (Kük.) Mack. | Carex aquatilis Wahlenb. var.substricta Kük. | 9125 | 9030 |
| Carex tolmiei Boott | Carex spectabilis Dewey | | | Carex tolmiei Boott | Carex spectabilis Dewey | 9126 | 433438 |
| Carex triangularis Boeck. | | a | | Carex triangularis Boeck. | | 9127 | |
| Carex turkestanica Regel | | a | | Carex turkestanica Regel | | 9128 | |
| Carex vaginata Tausch | | a | | Carex vaginata Tausch | | 9129 | |
| Carex verna Chaix | Carex caryophyllea Latourr. | | | Carex verna Chaix | Carex caryophyllea Latourr. | 9130 | 409624 |
| Carex vesicaria L. | | a | | Carex vesicaria L. | | 9131 | |
| Carex viridula Michx. | | a | | Carex viridula Michx. | | 9132 | |
| Carex whitneyi Olney | | a | | Carex whitneyi Olney | | 9133 | |
| Carex gracilis R. Br. | Carex brunnea Thunb. | | | Carex gracilis R. Br. | Carex brunnea Thunb. | 104837 | 409623 |
| Carex juncea Willd. | Carex ferruginea Scop. | | | Carex juncea Willd. | Carex ferruginea Scop. | 104838 | 433443 |
| Carex membranacea Hook. | | a | | Carex membranacea Hook. | | 104839 | |
| Carex spp. | | a | | Carex spp. | | 300109 | |
| Carex phaeocephala Piper f. eastwoodiana (Stacey) F. J. Herm. | Carex tahoensis Smiley | | i | Carex phaeocephala Piper f. eastwoodiana (Stacey) F. J. Herm. | Carex tahoensis Smiley | 311995 | 433268 |
| Carex eastwoodiana Stacey | Carex tahoensis Smiley | | | Carex eastwoodiana Stacey | Carex tahoensis Smiley | 311996 | 433268 |
| Carex otrubae Podp. | | a | | Carex otrubae Podp. | | 313375 | |
| Carex vulpina L. | | a | | Carex vulpina L. | | 313376 | |
| Carex compacta Lam. | Carex vulpina L. | | | Carex compacta Lam. | Carex vulpina L. | 313377 | 313376 |
| Carex conica Boott | | a | | Carex conica Boott | | 314395 | |
| Carex buchananii Berggr. | | a | | Carex buchananii Berggr. | | 314396 | |
| Carex specuicola J. T. Howell | | a | | Carex specuicola J. T. Howell | | 315687 | |
| Carex festucacea Schkuhr ex Willd. | | a | | Carex festucacea Schkuhr ex Willd. | | 316605 | |
| Carex lupulina Muhl. ex Willd. | | a | | Carex lupulina Muhl. ex Willd. | | 316606 | |
| Carex trichocarpa Willd. | | a | | Carex trichocarpa Willd. | | 316607 | |
| Carex songorica Kar. & Kir. | | a | | Carex songorica Kar. & Kir. | | 319098 | |
| Carex barrattii Schwein. & Torr. | | a | | Carex barrattii Schwein. & Torr. | | 400570 | |
| Carex roanensis F. J. Herm. | | a | | Carex roanensis F. J. Herm. | | 400825 | |
| Carex elata All. | | a | | Carex elata All. | | 401584 | |
| Carex myosurus Nees | | a | | Carex myosurus Nees | | 401598 | |
| Carex duriuscula C. A. Mey. | | a | | Carex duriuscula C. A. Mey. | | 401945 | |
| Carex pediformis C. A. Mey. | | a | | Carex pediformis C. A. Mey. | | 401946 | |
| Carex bellardii All. | Carex myosuroides Vill. | | | Carex bellardii All. | Carex myosuroides Vill. | 401996 | 447632 |
| Carex brizoides L. | | a | | Carex brizoides L. | | 402797 | |
| Carex hirta L. | | a | | Carex hirta L. | | 402799 | |
| Carex leporina L. | | a | | Carex leporina L. | | 402800 | |
| Carex panicea L. | | a | | Carex panicea L. | | 402803 | |
| Carex longebracteata Steud. | Carex myosurus Nees | | | Carex longebracteata Steud. | Carex myosurus Nees | 404499 | 401598 |
| Carex filifolia Nutt. | | a | | Carex filifolia Nutt. | | 407707 | |
| Carex pseudofoetida Kük. ex Ostenf. | | a | | Carex pseudofoetida Kük. ex Ostenf. | | 408586 | |
| Carex ovalis Gooden. | Carex leporina L. | | | Carex ovalis Gooden. | Carex leporina L. | 408855 | 402800 |
| Carex angustisquama Franch. | | a | | Carex angustisquama Franch. | | 409302 | |
| Carex depauperata Curtis ex With. | | a | | Carex depauperata Curtis ex With. | | 409303 | |
| Carex dioica L. | | a | | Carex dioica L. | | 409304 | |
| Carex hordeistichos Vill. | | a | | Carex hordeistichos Vill. | | 409305 | |
| Carex michelii Host | | a | | Carex michelii Host | | 409306 | |
| Carex acutiformis Ehrh. | | a | | Carex acutiformis Ehrh. | | 409307 | |
| Carex paludosa Good var. kochiana (DC.) Husn. | Carex acutiformis Ehrh. | | i | Carex paludosa Good var.kochiana (DC.) Husn. | Carex acutiformis Ehrh. | 409308 | 409307 |
| Carex paniculata L. | | a | | Carex paniculata L. | | 409309 | |
| Carex paludosa Good | Carex acutiformis Ehrh. | | | Carex paludosa Good | Carex acutiformis Ehrh. | 409310 | 409307 |
| Carex canariensis Kük. | | a | | Carex canariensis Kük. | | 409311 | |
| Carex pilulifera L. | | a | | Carex pilulifera L. | | 409313 | |
| Carex pulicaris L. | | a | | Carex pulicaris L. | | 409314 | |
| Carex divulsa Stokes | | a | | Carex divulsa Stokes | | 409315 | |
| Carex divulsa Stokes subsp. leersii (Kneuck.) W. Koch | Carex leersii F. W. Schultz | | i | Carex divulsa Stokes subsp. leersii (Kneuck.) W. Koch | Carex leersii F. W. Schultz | 409317 | 460016 |
| Carex polyphylla Kar. & Kir. | | a | | Carex polyphylla Kar. & Kir. | | 409318 | |
| Carex sempervirens Vill. | | a | | Carex sempervirens Vill. | | 409320 | |
| Carex tomentosa L. | | a | | Carex tomentosa L. | | 409321 | |
| Carex vulgaris Fr. | Carex nigra (L.) Reichard | | | Carex vulgaris Fr. | Carex nigra (L.) Reichard | 409322 | 9092 |
| Carex ×calderi B. Boivin | | a | | Carex calderi B. Boivin | | 409328 | |
| Carex liparocarpos Gaudin | | a | | Carex liparocarpos Gaudin | | 409329 | |
| Carex liparocarpos Gaudin subsp. liparocarpos | | a | i | Carex liparocarpos Gaudin subsp. liparocarpos | | 409330 | |
| Carex liparocarpos Gaudin subsp. bordzilowskii (V. I. Krecz.) T. V. Egorova | | a | i | Carex liparocarpos Gaudin subsp. bordzilowskii (V. I. Krecz.) T. V. Egorova | | 409332 | |
| Carex austroalpina Bech. | | a | | Carex austroalpina Bech. | | 409340 | |
| Carex refracta auct. | Carex austroalpina Bech. | | | Carex refracta auct. | Carex austroalpina Bech. | 409342 | 409340 |
| Carex filiformis auct. | Carex tomentosa L. | | | Carex filiformis auct. | Carex tomentosa L. | 409371 | 409321 |
| Carex riparia Curtis | | a | | Carex riparia Curtis | | 409589 | |
| Carex siderosticta Hance | | a | | Carex siderosticta Hance | | 409590 | |
| Carex brunnea Thunb. | | a | | Carex brunnea Thunb. | | 409623 | |
| Carex caryophyllea Latourr. | | a | | Carex caryophyllea Latourr. | | 409624 | |
| Carex firma Host | | a | | Carex firma Host | | 409625 | |
| Carex ornithopoda Willd. | | a | | Carex ornithopoda Willd. | | 409626 | |
| Carex scaposa C. B. Clarke | | a | | Carex scaposa C. B. Clarke | | 411043 | |
| Carex ultra L. H. Bailey | Carex spissa L. H. Bailey | | | Carex ultra L. H. Bailey | Carex spissa L. H. Bailey | 411238 | 433439 |
| Carex cretica Gradst. & J. Kern | | a | | Carex cretica Gradst. & J. Kern | | 411240 | |
| Carex bicknellii Britton | | a | | Carex bicknellii Britton | | 411241 | |
| Carex enervis C. A. Mey. | | a | | Carex enervis C. A. Mey. | | 413650 | |
| Carex karoi auct. | Carex delicata C. B. Clarke | | | Carex karoi auct. | Carex delicata C. B. Clarke | 413651 | 433423 |
| Carex korshinskyi Kom. | | a | | Carex korshinskyi Kom. | | 413654 | |
| Carex stenocarpa Turcz. ex V. I. Krecz. | Carex tristis M. Bieb. subsp. stenocarpa (Turcz. ex V. I. Krecz.) T. V. Egorova | | | Carex stenocarpa Turcz. ex V. I. Krecz. | Carex tristis M. Bieb. subsp. stenocarpa (Turcz. ex V. I. Krecz.) T. V. Egorova | 413655 | 433437 |
| Carex albida L. H. Bailey | | a | | Carex albida L. H. Bailey | | 415192 | |
| Carex atlantica L. H. Bailey | | a | | Carex atlantica L. H. Bailey | | 415431 | |
| Carex atlantica L. H. Bailey subsp. atlantica | | a | i | Carex atlantica L. H. Bailey subsp. atlantica | | 415432 | |
| Carex atlantica L. H. Bailey subsp. capillacea (L. H. Bailey) Reznicek | | a | i | Carex atlantica L. H. Bailey subsp. capillacea (L. H. Bailey) Reznicek | | 415433 | |
| Carex haydenii Dewey | | a | | Carex haydenii Dewey | | 415445 | |
| Carex longii Mack. | | a | | Carex longii Mack. | | 415446 | |
| Carex melanocarpa Cham. | | a | | Carex melanocarpa Cham. | | 415447 | |
| Carex schiedeana Kunze | | a | | Carex schiedeana Kunze | | 415448 | |
| Carex stellata Mack. | Carex schiedeana Kunze | | | Carex stellata Mack. | Carex schiedeana Kunze | 415449 | 415448 |
| Carex muriculata F. J. Herm. | | a | | Carex muriculata F. J. Herm. | | 415450 | |
| Carex fraseri Andrews | Carex fraseriana Ker Gawl. | | | Carex fraseri Andrews | Carex fraseriana Ker Gawl. | 415453 | 415454 |
| Carex fraseriana Ker Gawl. | | a | | Carex fraseriana Ker Gawl. | | 415454 | |
| Carex circinata C. A. Mey. | | a | | Carex circinata C. A. Mey. | | 417185 | |
| Carex lyngbyei Hornem. | | a | | Carex lyngbyei Hornem. | | 417186 | |
| Carex macrocephala Willd. ex Spreng. | | a | | Carex macrocephala Willd. ex Spreng. | | 417187 | |
| Carex macrochaeta C. A. Mey. | | a | | Carex macrochaeta C. A. Mey. | | 417192 | |
| Carex pluriflora Hultén | | a | | Carex pluriflora Hultén | | 417193 | |
| Carex sitchensis J. D. Prescott ex Bong. | Carex aquatilis Wahlenb. var. dives (Holm) Kük. | | | Carex sitchensis J. D. Prescott ex Bong. | Carex aquatilis Wahlenb. var.dives (Holm) Kük. | 417194 | 417198 |
| Carex aquatilis Wahlenb. var. aquatilis | | a | i | Carex aquatilis Wahlenb. var.aquatilis | | 417195 | |
| Carex aquatilis Wahlenb. subsp. stans (Boott) Hultén | Carex aquatilis Wahlenb. var. minor Boott | | i | Carex aquatilis Wahlenb. subsp. stans (Boott) Hultén | Carex aquatilis Wahlenb. var.minor Boott | 417196 | 433415 |
| Carex stans Drejer | Carex aquatilis Wahlenb. var. minor Boott | | | Carex stans Drejer | Carex aquatilis Wahlenb. var.minor Boott | 417197 | 433415 |
| Carex aquatilis Wahlenb. var. dives (Holm) Kük. | | a | i | Carex aquatilis Wahlenb. var.dives (Holm) Kük. | | 417198 | |
| Carex dives Holm | Carex aquatilis Wahlenb. var. dives (Holm) Kük. | | | Carex dives Holm | Carex aquatilis Wahlenb. var.dives (Holm) Kük. | 417199 | 417198 |
| Carex scopulorum Holm | | a | | Carex scopulorum Holm | | 417204 | |
| Carex scopulorum Holm var. scopulorum | | a | i | Carex scopulorum Holm var.scopulorum | | 417205 | |
| Carex scopulorum Holm var. bracteosa (L. H. Bailey) F. J. Herm. | | a | i | Carex scopulorum Holm var.bracteosa (L. H. Bailey) F. J. Herm. | | 417206 | |
| Carex vulgaris L. H. Bailey var. bracteosa L. H. Bailey | Carex scopulorum Holm var. bracteosa (L. H. Bailey) F. J. Herm. | | i | Carex vulgaris L. H. Bailey var.bracteosa L. H. Bailey | Carex scopulorum Holm var.bracteosa (L. H. Bailey) F. J. Herm. | 417207 | 417206 |
| Carex scopulorum Holm var. prionophylla (Holm) L. A. Standl. | | a | i | Carex scopulorum Holm var.prionophylla (Holm) L. A. Standl. | | 417208 | |
| Carex prionophylla Holm | Carex scopulorum Holm var. prionophylla (Holm) L. A. Standl. | | | Carex prionophylla Holm | Carex scopulorum Holm var.prionophylla (Holm) L. A. Standl. | 417209 | 417208 |
| Carex lenticularis Michx. | | a | | Carex lenticularis Michx. | | 417210 | |
| Carex lenticularis Michx. var. dolia (M. E. Jones) L. A. Standl. | | a | i | Carex lenticularis Michx. var.dolia (M. E. Jones) L. A. Standl. | | 417211 | |
| Carex goodenovii J. Gay var. dolia M. E. Jones | Carex lenticularis Michx. var. dolia (M. E. Jones) L. A. Standl. | | i | Carex goodenovii J. Gay var.dolia M. E. Jones | Carex lenticularis Michx. var.dolia (M. E. Jones) L. A. Standl. | 417212 | 417211 |
| Carex lenticularis Michx. var. lipocarpa (Holm) L. A. Standl. | | a | i | Carex lenticularis Michx. var.lipocarpa (Holm) L. A. Standl. | | 417213 | |
| Carex vulgaris L. H. Bailey var. lipocarpa Holm | Carex lenticularis Michx. var. lipocarpa (Holm) L. A. Standl. | | i | Carex vulgaris L. H. Bailey var.lipocarpa Holm | Carex lenticularis Michx. var.lipocarpa (Holm) L. A. Standl. | 417214 | 417213 |
| Carex stylosa C. A. Mey. | | a | | Carex stylosa C. A. Mey. | | 417215 | |
| Carex utriculata Boott | | a | | Carex utriculata Boott | | 417216 | |
| Carex rostrata auct. nonn. | Carex utriculata Boott | | | Carex rostrata auct. nonn. | Carex utriculata Boott | 417217 | 417216 |
| Carex bigelowii Torr. ex Schwein. | | a | | Carex bigelowii Torr. ex Schwein. | | 417487 | |
| Carex subspathacea Wormsk. ex Hornem. | | a | | Carex subspathacea Wormsk. ex Hornem. | | 417488 | |
| Carex arenaria L. | | a | | Carex arenaria L. | | 423345 | |
| Carex hendersonii L. H. Bailey | | a | | Carex hendersonii L. H. Bailey | | 428375 | |
| Carex tahoensis Smiley | | a | | Carex tahoensis Smiley | | 433268 | |
| Carex aquatilis Wahlenb. var. minor Boott | | a | i | Carex aquatilis Wahlenb. var.minor Boott | | 433415 | |
| Carex interior L. H. Bailey var. capillacea L. H. Bailey | Carex atlantica L. H. Bailey subsp. capillacea (L. H. Bailey) Reznicek | | i | Carex interior L. H. Bailey var.capillacea L. H. Bailey | Carex atlantica L. H. Bailey subsp. capillacea (L. H. Bailey) Reznicek | 433416 | 415433 |
| Carex deflexa Hornem. | | a | | Carex deflexa Hornem. | | 433417 | |
| Carex deflexa Hornem. var. deflexa | | a | i | Carex deflexa Hornem. var.deflexa | | 433418 | |
| Carex deflexa Hornem. var. boottii L. H. Bailey | | a | i | Carex deflexa Hornem. var.boottii L. H. Bailey | | 433419 | |
| Carex inops L. H. Bailey subsp. inops | | a | i | Carex inops L. H. Bailey subsp. inops | | 433420 | |
| Carex inops L. H. Bailey subsp. heliophila (Mack.) Crins | | a | i | Carex inops L. H. Bailey subsp. heliophila (Mack.) Crins | | 433421 | |
| Carex heliophila Mack. | Carex inops L. H. Bailey subsp. heliophila (Mack.) Crins | | | Carex heliophila Mack. | Carex inops L. H. Bailey subsp. heliophila (Mack.) Crins | 433422 | 433421 |
| Carex delicata C. B. Clarke | | a | | Carex delicata C. B. Clarke | | 433423 | |
| Carex pellita Muhl. ex Willd. | | a | | Carex pellita Muhl. ex Willd. | | 433424 | |
| Carex lenticularis Michx. var. lenticularis | | a | i | Carex lenticularis Michx. var.lenticularis | | 433425 | |
| Carex atratiformis Britton | | a | | Carex atratiformis Britton | | 433426 | |
| Carex scirpoidea Michx. | | a | | Carex scirpoidea Michx. | | 433427 | |
| Carex scirpoidea Michx. subsp. scirpoidea | | a | i | Carex scirpoidea Michx. subsp. scirpoidea | | 433428 | |
| Carex scirpoidea Michx. subsp. convoluta (Kük.) D. A. Dunlop | | a | i | Carex scirpoidea Michx. subsp. convoluta (Kük.) D. A. Dunlop | | 433429 | |
| Carex scirpoidea Michx. var. convoluta Kük. | Carex scirpoidea Michx. subsp. convoluta (Kük.) D. A. Dunlop | | i | Carex scirpoidea Michx. var.convoluta Kük. | Carex scirpoidea Michx. subsp. convoluta (Kük.) D. A. Dunlop | 433430 | 433429 |
| Carex scirpoidea Michx. subsp. pseudoscirpoidea (Rydb.) D. A. Dunlop | | a | i | Carex scirpoidea Michx. subsp. pseudoscirpoidea (Rydb.) D. A. Dunlop | | 433431 | |
| Carex pseudoscirpoidea Rydb. | Carex scirpoidea Michx. subsp. pseudoscirpoidea (Rydb.) D. A. Dunlop | | | Carex pseudoscirpoidea Rydb. | Carex scirpoidea Michx. subsp. pseudoscirpoidea (Rydb.) D. A. Dunlop | 433432 | 433431 |
| Carex scirpoidea Michx. subsp. stenochlaena (Holm) Á. Löve & D. Löve | | a | i | Carex scirpoidea Michx. subsp. stenochlaena (Holm) Á. Löve & D. Löve | | 433433 | |
| Carex scirpoidea Michx. var. stenochlaena Holm | Carex scirpoidea Michx. subsp. stenochlaena (Holm) Á. Löve & D. Löve | | i | Carex scirpoidea Michx. var.stenochlaena Holm | Carex scirpoidea Michx. subsp. stenochlaena (Holm) Á. Löve & D. Löve | 433434 | 433433 |
| Carex tristis M. Bieb. | | a | | Carex tristis M. Bieb. | | 433435 | |
| Carex tristis M. Bieb. subsp. tristis | | a | i | Carex tristis M. Bieb. subsp. tristis | | 433436 | |
| Carex tristis M. Bieb. subsp. stenocarpa (Turcz. ex V. I. Krecz.) T. V. Egorova | | a | i | Carex tristis M. Bieb. subsp. stenocarpa (Turcz. ex V. I. Krecz.) T. V. Egorova | | 433437 | |
| Carex spectabilis Dewey | | a | | Carex spectabilis Dewey | | 433438 | |
| Carex spissa L. H. Bailey | | a | | Carex spissa L. H. Bailey | | 433439 | |
| Carex serotina Mérat | Carex viridula Michx. | | | Carex serotina Mérat | Carex viridula Michx. | 433440 | 9132 |
| Carex stenophylla Wahlenb. var. desertorum Litv. | Carex pachystylis J. Gay | | i | Carex stenophylla Wahlenb. var.desertorum Litv. | Carex pachystylis J. Gay | 433441 | 9097 |
| Carex gifuensis Franch. | | a | | Carex gifuensis Franch. | | 433442 | |
| Carex ferruginea Scop. | | a | | Carex ferruginea Scop. | | 433443 | |
| Carex oronensis Fernald | | a | | Carex oronensis Fernald | | 444390 | |
| Carex lutea LeBlond | | a | | Carex lutea LeBlond | | 444506 | |
| Carex tumulicola Mack. | | a | | Carex tumulicola Mack. | | 447281 | |
| Carex myosuroides Vill. | | a | | Carex myosuroides Vill. | | 447632 | |
| Carex simpliciuscula Wahlenb. | | a | | Carex simpliciuscula Wahlenb. | | 447634 | |
| Carex alma L. H. Bailey | | a | | Carex alma L. H. Bailey | | 448102 | |
| Carex densa (L. H. Bailey) L. H. Bailey | | a | | Carex densa (L. H. Bailey) L. H. Bailey | | 448103 | |
| Carex hystericina Muhl. ex Willd. | | a | | Carex hystericina Muhl. ex Willd. | | 448104 | |
| Carex obnupta L. H. Bailey | | a | | Carex obnupta L. H. Bailey | | 448105 | |
| Carex pansa L. H. Bailey | | a | | Carex pansa L. H. Bailey | | 448106 | |
| Carex paupercula Michx. | Carex magellanica Lam. subsp. irrigua (Wahlenb.) Hiitonen | | | Carex paupercula Michx. | Carex magellanica Lam. subsp. irrigua (Wahlenb.) Hiitonen | 448107 | 453508 |
| Carex unilateralis Mack. | | a | | Carex unilateralis Mack. | | 448108 | |
| Carex laxiculmis Schwein. | | a | | Carex laxiculmis Schwein. | | 448749 | |
| Carex scoparia Schkuhr ex Willd. | | a | | Carex scoparia Schkuhr ex Willd. | | 448750 | |
| Carex lurida Wahlenb. | | a | | Carex lurida Wahlenb. | | 448751 | |
| Carex purpurifera Mack. | | a | | Carex purpurifera Mack. | | 448752 | |
| Carex cryptolepis Mack. | | a | | Carex cryptolepis Mack. | | 448753 | |
| Carex juniperorum Catling et al. | | a | | Carex juniperorum Catling et al. | | 450020 | |
| Carex cumberlandensis Naczi et al. | | a | | Carex cumberlandensis Naczi et al. | | 450029 | |
| Carex albolutescens Schwein. | | a | | Carex albolutescens Schwein. | | 451265 | |
| Carex blanda Dewey | | a | | Carex blanda Dewey | | 451266 | |
| Carex crinita Lam. | | a | | Carex crinita Lam. | | 451267 | |
| Carex squarrosa L. | | a | | Carex squarrosa L. | | 451268 | |
| Carex straminea Willd. ex Schkuhr | | a | | Carex straminea Willd. ex Schkuhr | | 451269 | |
| Carex stricta Lam. | | a | | Carex stricta Lam. | | 451283 | |
| Carex tribuloides Wahlenb. | | a | | Carex tribuloides Wahlenb. | | 451284 | |
| Carex vulpinoidea Michx. | | a | | Carex vulpinoidea Michx. | | 451285 | |
| Carex bella L. H. Bailey | | a | | Carex bella L. H. Bailey | | 452093 | |
| Carex mackenziei V. I. Krecz. | | a | | Carex mackenziei V. I. Krecz. | | 452094 | |
| Carex saxatilis L. | | a | | Carex saxatilis L. | | 452095 | |
| Carex brongniartii Kunth var. densa L. H. Bailey | Carex densa (L. H. Bailey) L. H. Bailey | | i | Carex brongniartii Kunth var.densa L. H. Bailey | Carex densa (L. H. Bailey) L. H. Bailey | 453505 | 448103 |
| Carex magellanica Lam. | | a | | Carex magellanica Lam. | | 453506 | |
| Carex magellanica Lam. subsp. magellanica | | a | i | Carex magellanica Lam. subsp. magellanica | | 453507 | |
| Carex magellanica Lam. subsp. irrigua (Wahlenb.) Hiitonen | | a | i | Carex magellanica Lam. subsp. irrigua (Wahlenb.) Hiitonen | | 453508 | |
| Carex brevicaulis Mack. | | a | | Carex brevicaulis Mack. | | 453509 | |
| Carex amplifolia Boott | | a | | Carex amplifolia Boott | | 453510 | |
| Carex trifida Cav. | | a | | Carex trifida Cav. | | 454189 | |
| Carex cherokeensis Schwein. | | a | | Carex cherokeensis Schwein. | | 455007 | |
| Carex tetrastachya Scheele | | a | | Carex tetrastachya Scheele | | 455008 | |
| Carex muricata L. var. leersii Kneuck. | Carex leersii F. W. Schultz | | i | Carex muricata L. var.leersii Kneuck. | Carex leersii F. W. Schultz | 455053 | 460016 |
| Carex oshimensis Nakai | | a | | Carex oshimensis Nakai | | 455119 | |
| Carex oligosperma Michx. | | a | | Carex oligosperma Michx. | | 456002 | |
| Carex plantaginea Lam. | | a | | Carex plantaginea Lam. | | 456003 | |
| Carex platyphylla J. Carey | | a | | Carex platyphylla J. Carey | | 456004 | |
| Carex prasina Wahlenb. | | a | | Carex prasina Wahlenb. | | 456005 | |
| Carex chihuahuensis Mack. | | a | | Carex chihuahuensis Mack. | | 456379 | |
| Carex chordorrhiza L. f. | | a | | Carex chordorrhiza L. f. | | 456380 | |
| Carex echinata Murray | | a | | Carex echinata Murray | | 456381 | |
| Carex echinata Murray subsp. echinata | | a | i | Carex echinata Murray subsp. echinata | | 456382 | |
| Carex echinata Murray subsp. phyllomanica (W. Boott) Reznicek | | a | i | Carex echinata Murray subsp. phyllomanica (W. Boott) Reznicek | | 456383 | |
| Carex phyllomanica W. Boott | Carex echinata Murray subsp. phyllomanica (W. Boott) Reznicek | | | Carex phyllomanica W. Boott | Carex echinata Murray subsp. phyllomanica (W. Boott) Reznicek | 456384 | 456383 |
| Carex gmelinii Hook. & Arn. | | a | | Carex gmelinii Hook. & Arn. | | 456385 | |
| Carex lenticularis Michx. var. limnophila (Holm) Cronquist | | a | i | Carex lenticularis Michx. var.limnophila (Holm) Cronquist | | 456386 | |
| Carex vulgaris L. H. Bailey var. limnophila Holm | Carex lenticularis Michx. var. limnophila (Holm) Cronquist | | i | Carex vulgaris L. H. Bailey var.limnophila Holm | Carex lenticularis Michx. var.limnophila (Holm) Cronquist | 456387 | 456386 |
| Carex lenticularis Michx. var. impressa (L. H. Bailey) L. A. Standl. | | a | i | Carex lenticularis Michx. var.impressa (L. H. Bailey) L. A. Standl. | | 456388 | |
| Carex interrupta Boeck. var. impressa L. H. Bailey | Carex lenticularis Michx. var. impressa (L. H. Bailey) L. A. Standl. | | i | Carex interrupta Boeck. var.impressa L. H. Bailey | Carex lenticularis Michx. var.impressa (L. H. Bailey) L. A. Standl. | 456389 | 456388 |
| Carex rotundata Wahlenb. | | a | | Carex rotundata Wahlenb. | | 456390 | |
| Carex okamotoi Ohwi | | a | | Carex okamotoi Ohwi | | 457630 | |
| Carex uncinata L. f. | | a | | Carex uncinata L. f. | | 458750 | |
| Carex breweri Boott | | a | | Carex breweri Boott | | 459100 | |
| Carex senta Boott | | a | | Carex senta Boott | | 459406 | |
| Carex siccata Dewey | | a | | Carex siccata Dewey | | 459432 | |
| Carex louisianica L. H. Bailey | | a | | Carex louisianica L. H. Bailey | | 459463 | |
| Carex complanata Torr. & Hook. | | a | | Carex complanata Torr. & Hook. | | 459643 | |
| Carex oklahomensis Mack. | | a | | Carex oklahomensis Mack. | | 459644 | |
| Carex aperta Boott | | a | | Carex aperta Boott | | 459703 | |
| Carex muskingumensis Schwein. | | a | | Carex muskingumensis Schwein. | | 459704 | |
| Carex comosa Boott | | a | | Carex comosa Boott | | 459705 | |
| Carex retrorsa Schwein. | | a | | Carex retrorsa Schwein. | | 459706 | |
| Carex leersii F. W. Schultz | | a | | Carex leersii F. W. Schultz | | 460016 | |
| Carex gynodynama Olney | | a | | Carex gynodynama Olney | | 461865 | |
| Carex grayi J. Carey | | a | | Carex grayi J. Carey | | 462926 | |
| Carex montana L. | | a | | Carex montana L. | | 463920 | |
| Carex cirrhosa Berggr. | | a | | Carex cirrhosa Berggr. | | 463972 | |
| Carex inversa R. Br. | | a | | Carex inversa R. Br. | | 463973 | |
| Carex ternaria G. Forst. | | a | | Carex ternaria G. Forst. | | 463974 | |
| Carex wakatipu Petrie | | a | | Carex wakatipu Petrie | | 463975 | |
| Carex frankii Kunth | | a | | Carex frankii Kunth | | 463976 | |
| Carex subfusca W. Boott | | a | | Carex subfusca W. Boott | | 464096 | |
| Carex macloviana dʼUrv. var. subfusca (W. Boott) Kük. | Carex subfusca W. Boott | | i | Carex macloviana dʼUrv. var.subfusca (W. Boott) Kük. | Carex subfusca W. Boott | 464097 | 464096 |
| Carex macloviana dʼUrv. subsp. subfusca (W. Boott) T. Koyama | Carex subfusca W. Boott | | i | Carex macloviana dʼUrv. subsp. subfusca (W. Boott) T. Koyama | Carex subfusca W. Boott | 464098 | 464096 |
| Carex biltmoreana Mack. | | a | | Carex biltmoreana Mack. | | 464301 | |
| Carex appressa R. Br. | | a | | Carex appressa R. Br. | | 465090 | |
| Carex comans Berggr. | | a | | Carex comans Berggr. | | 465091 | |
| Carex coriacea Hamlin | | a | | Carex coriacea Hamlin | | 465092 | |
| Carex dimorpholepis Steud. | | a | | Carex dimorpholepis Steud. | | 465093 | |
| Carex cernua Boott | Carex dimorpholepis Steud. | | | Carex cernua Boott | Carex dimorpholepis Steud. | 465094 | 465093 |
| Carex flacca Schreb. | | a | | Carex flacca Schreb. | | 465095 | |
| Carex flagellifera Colenso | | a | | Carex flagellifera Colenso | | 465096 | |
| Carex meyeriana Kunth | | a | | Carex meyeriana Kunth | | 465097 | |
| Carex canescens L. subsp. canescens | | a | i | Carex canescens L. subsp. canescens | | 465409 | |
| Carex canescens L. subsp. disjuncta (Fernald) Toivonen | | a | i | Carex canescens L. subsp. disjuncta (Fernald) Toivonen | | 465410 | |
| Carex canescens L. var. disjuncta Fernald | Carex canescens L. subsp. disjuncta (Fernald) Toivonen | | i | Carex canescens L. var.disjuncta Fernald | Carex canescens L. subsp. disjuncta (Fernald) Toivonen | 465411 | 465410 |
| Carex lachenalii Schkuhr | | a | | Carex lachenalii Schkuhr | | 465413 | |
| Carex tripartita All. | Carex lachenalii Schkuhr | | | Carex tripartita All. | Carex lachenalii Schkuhr | 465414 | 465413 |
| Carex lagopina Wahlenb. | Carex lachenalii Schkuhr | | | Carex lagopina Wahlenb. | Carex lachenalii Schkuhr | 465415 | 465413 |
| Carex bipartita auct. nonn. | Carex lachenalii Schkuhr | | | Carex bipartita auct. nonn. | Carex lachenalii Schkuhr | 465416 | 465413 |
| Carex krausei Boeck. | | a | | Carex krausei Boeck. | | 465417 | |
| Carex norvegica Retz. subsp. inferalpina (Wahlenb.) Hultén | Carex media R. Br. ex Richardson | | i | Carex norvegica Retz. subsp. inferalpina (Wahlenb.) Hultén | Carex media R. Br. ex Richardson | 465418 | 9084 |
| Carex alpina Lilj. var. inferalpina Wahlenb. | Carex media R. Br. ex Richardson | | i | Carex alpina Lilj. var.inferalpina Wahlenb. | Carex media R. Br. ex Richardson | 465419 | 9084 |
| Carex tenax Chapm. ex Dewey | | a | | Carex tenax Chapm. ex Dewey | | 465587 | |
| Carex baileyi Britton | | a | | Carex baileyi Britton | | 465727 | |
| Carex tentaculata Muhl. ex Willd. var. gracilis Boott | Carex baileyi Britton | | i | Carex tentaculata Muhl. ex Willd. var.gracilis Boott | Carex baileyi Britton | 465728 | 465727 |
| Carex serratodens W. Boott | | a | | Carex serratodens W. Boott | | 465910 | |
| Carex phyllocephala T. Koyama | | a | | Carex phyllocephala T. Koyama | | 466010 | |
| Carex cephalophora Muhl. ex Willd. | | a | | Carex cephalophora Muhl. ex Willd. | | 466799 | |
| Carex davisii Schwein. & Torr. | | a | | Carex davisii Schwein. & Torr. | | 466800 | |
| Carex glaucodea Tuck. ex Olney | | a | | Carex glaucodea Tuck. ex Olney | | 466801 | |
| Carex gravida L. H. Bailey | | a | | Carex gravida L. H. Bailey | | 466802 | |
| Carex heteroneura W. Boott | | a | | Carex heteroneura W. Boott | | 466803 | |
| Carex jamesii Schwein. | | a | | Carex jamesii Schwein. | | 466804 | |
| Carex molesta Mack. ex Bright | | a | | Carex molesta Mack. ex Bright | | 466805 | |
| Carex sterilis Willd. | | a | | Carex sterilis Willd. | | 466806 | |
| Carex rupestris All. | | a | | Carex rupestris All. | | 467513 | |
| Carex praecox Schreb. | | a | | Carex praecox Schreb. | | 467558 | |
| Carex swanii (Fernald) Mack. | | a | | Carex swanii (Fernald) Mack. | | 467933 | |
| Carex virescens Muhl. ex Willd. var. swanii Fernald | Carex swanii (Fernald) Mack. | | i | Carex virescens Muhl. ex Willd. var.swanii Fernald | Carex swanii (Fernald) Mack. | 467935 | 467933 |
| Carex crawei Dewey | | a | | Carex crawei Dewey | | 468311 | |
| Carex crus-corvi Shuttlew. | | a | | Carex crus-corvi Shuttlew. | | 468312 | |
| Carex eburnea Boott | | a | | Carex eburnea Boott | | 468313 | |
| Carex granularis Muhl. ex Willd. | | a | | Carex granularis Muhl. ex Willd. | | 468314 | |
| Carex hirtifolia Mack. | | a | | Carex hirtifolia Mack. | | 468315 | |
| Carex pensylvanica Lam. | | a | | Carex pensylvanica Lam. | | 468316 | |
| Carex integra Mack. | | a | | Carex integra Mack. | | 468531 | |
| Carex vallicola Dewey | | a | | Carex vallicola Dewey | | 468532 | |
| Carex pseudocyperus L. | | a | | Carex pseudocyperus L. | | 468829 | |
| Carex petriei Cheeseman | | a | | Carex petriei Cheeseman | | 468831 | |
| Carex digitata L. | | a | | Carex digitata L. | | 468832 | |
| Carex umbrosa Host | | a | | Carex umbrosa Host | | 468833 | |
| Carex umbrosa Host subsp. umbrosa | | a | i | Carex umbrosa Host subsp. umbrosa | | 468838 | |
| Carex umbrosa Host subsp. sabynensis (Less. ex Kunth) Kük. | | a | i | Carex umbrosa Host subsp. sabynensis (Less. ex Kunth) Kük. | | 468849 | |
| Carex sabynensis Less. ex Kunth | Carex umbrosa Host subsp. sabynensis (Less. ex Kunth) Kük. | | | Carex sabynensis Less. ex Kunth | Carex umbrosa Host subsp. sabynensis (Less. ex Kunth) Kük. | 468850 | 468849 |
| Carex bromoides Schkuhr ex Willd. | | a | | Carex bromoides Schkuhr ex Willd. | | 469122 | |
| Carex communis L. H. Bailey | | a | | Carex communis L. H. Bailey | | 470115 | |
| Carex folliculata L. | | a | | Carex folliculata L. | | 470116 | |
| Carex crawfordii Fernald | | a | | Carex crawfordii Fernald | | 470393 | |
| Carex annectens (E. P. Bicknell) E. P. Bicknell | | a | | Carex annectens (E. P. Bicknell) E. P. Bicknell | | 474749 | |
| Carex xanthocarpa E. P. Bicknell var. annectens E. P. Bicknell | Carex annectens (E. P. Bicknell) E. P. Bicknell | | i | Carex xanthocarpa E. P. Bicknell var.annectens E. P. Bicknell | Carex annectens (E. P. Bicknell) E. P. Bicknell | 474750 | 474749 |
| Carex muehlenbergii Schkuhr ex Willd. | | a | | Carex muehlenbergii Schkuhr ex Willd. | | 474751 | |
| Carex radiata (Wahlenb.) Small | | a | | Carex radiata (Wahlenb.) Small | | 474752 | |
| Carex stellulata Gooden. var. radiata Wahlenb. | Carex radiata (Wahlenb.) Small | | i | Carex stellulata Gooden. var.radiata Wahlenb. | Carex radiata (Wahlenb.) Small | 474753 | 474752 |
| Carex shortiana Dewey | | a | | Carex shortiana Dewey | | 474754 | |
| Carex debilis Michx. | | a | | Carex debilis Michx. | | 476681 | |
| Carex hirsutella Mack. | | a | | Carex hirsutella Mack. | | 476728 | |
| Carex nudicarpa (Y. C. Yang) S. R. Zhang | | a | | Carex nudicarpa (Y. C. Yang) S. R. Zhang | | 476754 | |
| Carex parvula Okih. Yano | | a | | Carex parvula Okih. Yano | | 476756 | |
| Carex borealipolaris S. R. Zhang | | a | | Carex borealipolaris S. R. Zhang | | 476758 | |
| Carex punicea K. A. Ford | | a | | Carex punicea K. A. Ford | | 476759 | |
| Carex egmontiana (Hamlin) K. A. Ford | | a | | Carex egmontiana (Hamlin) K. A. Ford | | 476760 | |
| Carex edura K. A. Ford | | a | | Carex edura K. A. Ford | | 476762 | |
| Carex brunnescens (Pers.) Poir. | | a | | Carex brunnescens (Pers.) Poir. | | 476807 | |
| Carex curta Gooden. unranked brunnescens Pers. | Carex brunnescens (Pers.) Poir. | | i | Carex curta Gooden. unranked brunnescens Pers. | Carex brunnescens (Pers.) Poir. | 476808 | 476807 |
| Carex tereticaulis F. Muell. | | a | | Carex tereticaulis F. Muell. | | 477106 | |
| Carex gynandra Schwein. | | a | | Carex gynandra Schwein. | | 477562 | |
| Carex lanuginosa Michx. | Carex lasiocarpa Ehrh. | | | Carex lanuginosa Michx. | Carex lasiocarpa Ehrh. | 478066 | 9077 |
| Carex lacustris Willd. | | a | | Carex lacustris Willd. | | 478184 | |
| Carex paysonis Clokey | | a | | Carex paysonis Clokey | | 478185 | |
| Carex podocarpa R. Br. ex Richardson var. paysonis (Clokey) B. Boivin | Carex paysonis Clokey | | i | Carex podocarpa R. Br. ex Richardson var.paysonis (Clokey) B. Boivin | Carex paysonis Clokey | 478186 | 478185 |
| Carex humilis Leyss. | | a | | Carex humilis Leyss. | | 478187 | |
| Carex filifolia Nutt. var. erostrata Kük. | | a | i | Carex filifolia Nutt. var.erostrata Kük. | | 478210 | |
| Carex exserta Mack. | Carex filifolia Nutt. var. erostrata Kük. | | | Carex exserta Mack. | Carex filifolia Nutt. var.erostrata Kük. | 478211 | 478210 |
| Carex filifolia Nutt. var. filifolia | | a | i | Carex filifolia Nutt. var.filifolia | | 478212 | |
| Carex nudata W. Boott | | a | | Carex nudata W. Boott | | 478503 | |
| Carex orestera Zika | | a | | Carex orestera Zika | | 479452 | |
| Carex lemmonii W. Boott | | a | | Carex lemmonii W. Boott | | 479454 | |
| Carex xerophila Janeway & Zika | | a | | Carex xerophila Janeway & Zika | | 479455 | |
| Carex albicans Willd. ex Spreng. var. albicans | | a | i | Carex albicans Willd. ex Spreng. var.albicans | | 479832 | |
| Carex opaca (F. J. Herm.) P. Rothr. & Reznicek | | a | | Carex opaca (F. J. Herm.) P. Rothr. & Reznicek | | 479833 | |
| Carex leptonervia (Fernald) Fernald | | a | | Carex leptonervia (Fernald) Fernald | | 479845 | |
| Carex bicknellii Britton var. bicknellii | Carex bicknellii Britton | | i | Carex bicknellii Britton var.bicknellii | Carex bicknellii Britton | 479849 | 411241 |
| Carex albicans Willd. ex Spreng. | | a | | Carex albicans Willd. ex Spreng. | | 479850 | |
| Carex laxiflora Lam. var. leptonervia Fernald | Carex leptonervia (Fernald) Fernald | | i | Carex laxiflora Lam. var.leptonervia Fernald | Carex leptonervia (Fernald) Fernald | 479851 | 479845 |
| Carex laxiflora Lam. var. laxiflora | Carex laxiflora Lam. | | i | Carex laxiflora Lam. var.laxiflora | Carex laxiflora Lam. | 479852 | 479853 |
| Carex laxiflora Lam. | | a | | Carex laxiflora Lam. | | 479853 | |
| Carex bicknellii Britton var. opaca F. J. Herm. | Carex opaca (F. J. Herm.) P. Rothr. & Reznicek | | i | Carex bicknellii Britton var.opaca F. J. Herm. | Carex opaca (F. J. Herm.) P. Rothr. & Reznicek | 479854 | 479833 |
| Carex ovata Burm. f. | Abildgaardia ovata (Burm. f.) Kral | | | Carex ovata Burm. f. | Abildgaardia ovata (Burm. f.) Kral | 479946 | 479949 |
| Carex leucochlora Bunge | Carex breviculmis R. Br. | | | Carex leucochlora Bunge | Carex breviculmis R. Br. | 480188 | 480189 |
| Carex breviculmis R. Br. | | a | | Carex breviculmis R. Br. | | 480189 | |
| Carex garberi Fernald | | a | | Carex garberi Fernald | | 480553 | |
| Carex acuta L. | | a | | Carex acuta L. | | 481021 | |
| Carex alata Torr. | | a | | Carex alata Torr. | | 481022 | |
| Carex albula Allan | | a | | Carex albula Allan | | 481023 | |
| Carex appalachica J. M. Webber & P. W. Ball | | a | | Carex appalachica J. M. Webber & P. W. Ball | | 481026 | |
| Carex conjuncta Boott | | a | | Carex conjuncta Boott | | 481027 | |
| Carex dipsacea Berggr. | | a | | Carex dipsacea Berggr. | | 481028 | |
| Carex geminata Schkuhr | | a | | Carex geminata Schkuhr | | 481029 | |
| Carex glaucescens Elliott | | a | | Carex glaucescens Elliott | | 481030 | |
| Carex grisea Wahlenb. | | a | | Carex grisea Wahlenb. | | 481031 | |
| Carex intumescens Rudge | | a | | Carex intumescens Rudge | | 481032 | |
| Carex laeviconica Dewey | | a | | Carex laeviconica Dewey | | 481033 | |
| Carex lessoniana Steud. | | a | | Carex lessoniana Steud. | | 481034 | |
| Carex lupuliformis Sartwell ex Dewey | | a | | Carex lupuliformis Sartwell ex Dewey | | 481035 | |
| Carex normalis Mack. | | a | | Carex normalis Mack. | | 481036 | |
| Carex maorica Hamlin | | a | | Carex maorica Hamlin | | 481037 | |
| Carex muricata L. var. muricata | Carex muricata L. | | i | Carex muricata L. var.muricata | Carex muricata L. | 481104 | 481105 |
| Carex muricata L. | | a | | Carex muricata L. | | 481105 | |
| Carex interior L. H. Bailey var. interior | Carex interior L. H. Bailey | | i | Carex interior L. H. Bailey var.interior | Carex interior L. H. Bailey | 481387 | 9070 |
| Carex interior L. H. Bailey f. interior | Carex interior L. H. Bailey | | i | Carex interior L. H. Bailey f. interior | Carex interior L. H. Bailey | 481388 | 9070 |
| Carex flaccosperma Dewey | Carex xanthosperma Dewey | | | Carex flaccosperma Dewey | Carex xanthosperma Dewey | 481451 | 481452 |
| Carex xanthosperma Dewey | | a | | Carex xanthosperma Dewey | | 481452 | |
| Carex phaeocephala Piper f. phaeocephala | Carex phaeocephala Piper | | i | Carex phaeocephala Piper f. phaeocephala | Carex phaeocephala Piper | 484281 | 9099 |
| Carex dolichostachya Hayata | | a | | Carex dolichostachya Hayata | | 485080 | |
| Carex hitchcockiana Dewey | | a | | Carex hitchcockiana Dewey | | 485087 | |
| Carex morrowii Boott var. laxa Ohwi | | a | i | Carex morrowii Boott var.laxa Ohwi | | 485088 | |
| Carex morrowii Boott var. temnolepis (Franch.) Ohwi | | a | i | Carex morrowii Boott var.temnolepis (Franch.) Ohwi | | 485089 | |
| Carex morrowii Boott var. morrowii | | a | i | Carex morrowii Boott var.morrowii | | 485090 | |
| Carex temnolepis Franch. | Carex morrowii Boott var. temnolepis (Franch.) Ohwi | | | Carex temnolepis Franch. | Carex morrowii Boott var.temnolepis (Franch.) Ohwi | 485091 | 485089 |
| Carex siderosticta Hance var. pilosa H. Lév. ex T. Koyama | | a | i | Carex siderosticta Hance var.pilosa H. Lév. ex T. Koyama | | 485092 | |
| Carex siderosticta Hance var. siderosticta | | a | i | Carex siderosticta Hance var.siderosticta | | 485093 | |
| Carex tenera Dewey | | a | | Carex tenera Dewey | | 485182 | |
| Carex tenera Dewey var. tenera | | a | i | Carex tenera Dewey var.tenera | | 485183 | |
| Carex tenera Dewey var. echinodes (Fernald) Wiegand | | a | i | Carex tenera Dewey var.echinodes (Fernald) Wiegand | | 485184 | |
| Carex straminea Willd. ex Schkuhr var. echinodes Fernald | Carex tenera Dewey var. echinodes (Fernald) Wiegand | | i | Carex straminea Willd. ex Schkuhr var.echinodes Fernald | Carex tenera Dewey var.echinodes (Fernald) Wiegand | 485185 | 485184 |
| Carex straminea Willd. ex Schkuhr var. straminea | Carex straminea Willd. ex Schkuhr | | i | Carex straminea Willd. ex Schkuhr var.straminea | Carex straminea Willd. ex Schkuhr | 485186 | 451269 |
| Carex typhina Michx. | | a | | Carex typhina Michx. | | 485187 | |
| Carex cristatella Britton | | a | | Carex cristatella Britton | | 485188 | |
| Carex klamathensis B. L. Wilson & Janeway | | a | | Carex klamathensis B. L. Wilson & Janeway | | 485219 | |
| Carex harfordii Mack. | | a | | Carex harfordii Mack. | | 485220 | |
| Carex acuta L. var. acuta | Carex acuta L. | | i | Carex acuta L. var.acuta | Carex acuta L. | 486429 | 481021 |
| Carex aquatilis Wahlenb. subsp. aquatilis | Carex aquatilis Wahlenb. var. aquatilis | | i | Carex aquatilis Wahlenb. subsp. aquatilis | Carex aquatilis Wahlenb. var.aquatilis | 486430 | 417195 |
| Carex divulsa Stokes subsp. divulsa | Carex divulsa Stokes | | i | Carex divulsa Stokes subsp. divulsa | Carex divulsa Stokes | 486431 | 409315 |