| 10603 | Cirsium involucratum DC. | Cirsium verutum (D. Don) Spreng. | 104162 | | | Cirsium involucratum DC. | Cirsium verutum (D. Don) Spreng. |
| 10604 | Cirsium monspessulanum (L.) Hill | | | a | | Cirsium monspessulanum (L.) Hill | |
| 100755 | Cirsium arvense (L.) Scop. | | | a | | Cirsium arvense (L.) Scop. | |
| 104162 | Cirsium verutum (D. Don) Spreng. | | | a | | Cirsium verutum (D. Don) Spreng. | |
| 104163 | Cirsium vulgare (Savi) Ten. | | | a | | Cirsium vulgare (Savi) Ten. | |
| 316185 | Cirsium pitcheri (Torr. ex Eaton) Torr. & A. Gray | | | a | | Cirsium pitcheri (Torr. ex Eaton) Torr. & A. Gray | |
| 316202 | Cirsium ownbeyi S. L. Welsh | | | a | | Cirsium ownbeyi S. L. Welsh | |
| 316371 | Cirsium hillii (Canby) Fernald | Cirsium pumilum Spreng. var. hillii (Canby) B. Boivin | 453111 | | | Cirsium hillii (Canby) Fernald | Cirsium pumilum Spreng. var.hillii (Canby) B. Boivin |
| 316621 | Cirsium altissimum (L.) Spreng. | | | a | | Cirsium altissimum (L.) Spreng. | |
| 316622 | Cirsium canescens Nutt. | | | a | | Cirsium canescens Nutt. | |
| 316623 | Cirsium discolor (Muhl. ex Willd.) Spreng. | | | a | | Cirsium discolor (Muhl. ex Willd.) Spreng. | |
| 316624 | Cirsium flodmanii (Rydb.) Arthur | | | a | | Cirsium flodmanii (Rydb.) Arthur | |
| 316625 | Cirsium ochrocentrum A. Gray | | | a | | Cirsium ochrocentrum A. Gray | |
| 316626 | Cirsium remotifolium (Hook.) DC. | | | a | | Cirsium remotifolium (Hook.) DC. | |
| 316627 | Cirsium undulatum (Nutt.) Spreng. | | | a | | Cirsium undulatum (Nutt.) Spreng. | |
| 316940 | Cirsium pumilum Spreng. | | | a | | Cirsium pumilum Spreng. | |
| 317040 | Cirsium spp. | | | a | | Cirsium spp. | |
| 317194 | Cirsium plattense (Rydb.) Cockerell ex Daniels | Cirsium canescens Nutt. | 316622 | | | Cirsium plattense (Rydb.) Cockerell ex Daniels | Cirsium canescens Nutt. |
| 317991 | Cirsium baeticum Spreng. | Cynara baetica (Spreng.) Pau subsp. baetica | 317990 | | | Cirsium baeticum Spreng. | Cynara baetica (Spreng.) Pau subsp. baetica |
| 319819 | Cirsium vinaceum (Wooton & Standl.) Wooton & Standl. | | | a | | Cirsium vinaceum (Wooton & Standl.) Wooton & Standl. | |
| 401014 | Cirsium fontinale (Greene) Jeps. var. obispoense J. T. Howell | | | a | i | Cirsium fontinale (Greene) Jeps. var.obispoense J. T. Howell | |
| 401604 | Cirsium palustre (L.) Scop. | | | a | | Cirsium palustre (L.) Scop. | |
| 402242 | Cirsium fontinale (Greene) Jeps. var. fontinale | | | a | i | Cirsium fontinale (Greene) Jeps. var.fontinale | |
| 402243 | Cirsium fontinale (Greene) Jeps. | | | a | | Cirsium fontinale (Greene) Jeps. | |
| 406927 | Cirsium horridulum Michx. | | | a | | Cirsium horridulum Michx. | |
| 413498 | Cirsium esculentum (Siev.) C. A. Mey. | | | a | | Cirsium esculentum (Siev.) C. A. Mey. | |
| 415728 | Cirsium hydrophilum (Greene) Jeps. | | | a | | Cirsium hydrophilum (Greene) Jeps. | |
| 415729 | Cirsium hydrophilum (Greene) Jeps. var. hydrophilum | | | a | i | Cirsium hydrophilum (Greene) Jeps. var.hydrophilum | |
| 417218 | Cirsium kamtschaticum Ledeb. ex DC. | | | a | | Cirsium kamtschaticum Ledeb. ex DC. | |
| 419814 | Cirsium japonicum Fisch. ex DC. | | | a | | Cirsium japonicum Fisch. ex DC. | |
| 419844 | Cirsium lanceolatum (L.) Scop. | Cirsium vulgare (Savi) Ten. | 104163 | | | Cirsium lanceolatum (L.) Scop. | Cirsium vulgare (Savi) Ten. |
| 423356 | Cirsium segetum Bunge | Cirsium arvense (L.) Scop. | 100755 | | | Cirsium segetum Bunge | Cirsium arvense (L.) Scop. |
| 423878 | Cirsium setosum (Willd.) Besser ex M. Bieb. | Cirsium arvense (L.) Scop. | 100755 | | | Cirsium setosum (Willd.) Besser ex M. Bieb. | Cirsium arvense (L.) Scop. |
| 429451 | Cirsium mexicanum DC. | | | a | | Cirsium mexicanum DC. | |
| 444399 | Cirsium aridum Dorn | Cirsium pulcherrimum (Rydb.) K. Schum. var. aridum (Dorn) D. J. Keil | 453099 | | | Cirsium aridum Dorn | Cirsium pulcherrimum (Rydb.) K. Schum. var.aridum (Dorn) D. J. Keil |
| 444507 | Cirsium loncholepis Petr. | Cirsium scariosum Nutt. var. citrinum (Petr.) D. J. Keil | 453129 | | | Cirsium loncholepis Petr. | Cirsium scariosum Nutt. var.citrinum (Petr.) D. J. Keil |
| 447662 | Cirsium lyratum Bunge | Hemisteptia lyrata (Bunge) Fisch. & C. A. Mey. | 447661 | | | Cirsium lyratum Bunge | Hemisteptia lyrata (Bunge) Fisch. & C. A. Mey. |
| 448118 | Cirsium cymosum (Greene) J. T. Howell | | | a | | Cirsium cymosum (Greene) J. T. Howell | |
| 448119 | Cirsium occidentale (Nutt.) Jeps. | | | a | | Cirsium occidentale (Nutt.) Jeps. | |
| 448120 | Cirsium scariosum Nutt. | | | a | | Cirsium scariosum Nutt. | |
| 448121 | Cirsium subniveum Rydb. | Cirsium inamoenum (Greene) D. J. Keil var. inamoenum | 453154 | | | Cirsium subniveum Rydb. | Cirsium inamoenum (Greene) D. J. Keil var.inamoenum |
| 449271 | Cirsium acarna (L.) Moench | Picnomon acarna (L.) Cass. | 401817 | | | Cirsium acarna (L.) Moench | Picnomon acarna (L.) Cass. |
| 449809 | Cirsium muticum Michx. | | | a | | Cirsium muticum Michx. | |
| 449876 | Cirsium carolinianum (Walter) Fernald & B. G. Schub. | | | a | | Cirsium carolinianum (Walter) Fernald & B. G. Schub. | |
| 450134 | Cirsium syriacum (L.) Gaertn. | Notobasis syriaca (L.) Cass. | 447370 | | | Cirsium syriacum (L.) Gaertn. | Notobasis syriaca (L.) Cass. |
| 452111 | Cirsium brevistylum Cronquist | | | a | | Cirsium brevistylum Cronquist | |
| 452112 | Cirsium mohavense (Greene) Petr. | | | a | | Cirsium mohavense (Greene) Petr. | |
| 452113 | Cirsium neomexicanum A. Gray | | | a | | Cirsium neomexicanum A. Gray | |
| 452114 | Cirsium quercetorum (A. Gray) Jeps. | | | a | | Cirsium quercetorum (A. Gray) Jeps. | |
| 453096 | Cirsium pulcherrimum (Rydb.) K. Schum. | | | a | | Cirsium pulcherrimum (Rydb.) K. Schum. | |
| 453098 | Cirsium pulcherrimum (Rydb.) K. Schum. var. pulcherrimum | | | a | i | Cirsium pulcherrimum (Rydb.) K. Schum. var.pulcherrimum | |
| 453099 | Cirsium pulcherrimum (Rydb.) K. Schum. var. aridum (Dorn) D. J. Keil | | | a | i | Cirsium pulcherrimum (Rydb.) K. Schum. var.aridum (Dorn) D. J. Keil | |
| 453101 | Cirsium cymosum (Greene) J. T. Howell var. cymosum | | | a | i | Cirsium cymosum (Greene) J. T. Howell var.cymosum | |
| 453104 | Cirsium cymosum (Greene) J. T. Howell var. canovirens (Rydb.) D. J. Keil | | | a | i | Cirsium cymosum (Greene) J. T. Howell var.canovirens (Rydb.) D. J. Keil | |
| 453108 | Cirsium fontinale (Greene) Jeps. var. campylon (H. Sharsm.) Pilz ex D. J. Keil & C. E. Turner | | | a | i | Cirsium fontinale (Greene) Jeps. var.campylon (H. Sharsm.) Pilz ex D. J. Keil & C. E. Turner | |
| 453109 | Cirsium campylon H. Sharsm. | Cirsium fontinale (Greene) Jeps. var. campylon (H. Sharsm.) Pilz ex D. J. Keil & C. E. Turner | 453108 | | | Cirsium campylon H. Sharsm. | Cirsium fontinale (Greene) Jeps. var.campylon (H. Sharsm.) Pilz ex D. J. Keil & C. E. Turner |
| 453110 | Cirsium pumilum Spreng. var. pumilum | | | a | i | Cirsium pumilum Spreng. var.pumilum | |
| 453111 | Cirsium pumilum Spreng. var. hillii (Canby) B. Boivin | | | a | i | Cirsium pumilum Spreng. var.hillii (Canby) B. Boivin | |
| 453112 | Cirsium horridulum Michx. var. horridulum | | | a | i | Cirsium horridulum Michx. var.horridulum | |
| 453113 | Cirsium horridulum Michx. var. megacanthum (Nutt.) D. J. Keil | | | a | i | Cirsium horridulum Michx. var.megacanthum (Nutt.) D. J. Keil | |
| 453114 | Cirsium megacanthum Nutt. | Cirsium horridulum Michx. var. megacanthum (Nutt.) D. J. Keil | 453113 | | | Cirsium megacanthum Nutt. | Cirsium horridulum Michx. var.megacanthum (Nutt.) D. J. Keil |
| 453115 | Cirsium horridulum Michx. var. vittatum (Small) R. W. Long | | | a | i | Cirsium horridulum Michx. var.vittatum (Small) R. W. Long | |
| 453117 | Cirsium hydrophilum (Greene) Jeps. var. vaseyi (A. Gray) J. T. Howell | | | a | i | Cirsium hydrophilum (Greene) Jeps. var.vaseyi (A. Gray) J. T. Howell | |
| 453120 | Cirsium scariosum Nutt. var. scariosum | | | a | i | Cirsium scariosum Nutt. var.scariosum | |
| 453121 | Cirsium scariosum Nutt. var. coloradense (Rydb.) D. J. Keil | | | a | i | Cirsium scariosum Nutt. var.coloradense (Rydb.) D. J. Keil | |
| 453123 | Cirsium scariosum Nutt. var. americanum (A. Gray) D. J. Keil | | | a | i | Cirsium scariosum Nutt. var.americanum (A. Gray) D. J. Keil | |
| 453124 | Cirsium acaule (L.) Scop. var. americanum A. Gray | Cirsium scariosum Nutt. var. americanum (A. Gray) D. J. Keil | 453123 | | i | Cirsium acaule (L.) Scop. var.americanum A. Gray | Cirsium scariosum Nutt. var.americanum (A. Gray) D. J. Keil |
| 453125 | Cirsium scariosum Nutt. var. thorneae S. L. Welsh | | | a | i | Cirsium scariosum Nutt. var.thorneae S. L. Welsh | |
| 453126 | Cirsium scariosum Nutt. var. congdonii (R. J. Moore & Frankton) D. J. Keil | | | a | i | Cirsium scariosum Nutt. var.congdonii (R. J. Moore & Frankton) D. J. Keil | |
| 453127 | Cirsium congdonii R. J. Moore & Frankton | Cirsium scariosum Nutt. var. congdonii (R. J. Moore & Frankton) D. J. Keil | 453126 | | | Cirsium congdonii R. J. Moore & Frankton | Cirsium scariosum Nutt. var.congdonii (R. J. Moore & Frankton) D. J. Keil |
| 453128 | Cirsium scariosum Nutt. var. toiyabense D. J. Keil | | | a | i | Cirsium scariosum Nutt. var.toiyabense D. J. Keil | |
| 453129 | Cirsium scariosum Nutt. var. citrinum (Petr.) D. J. Keil | | | a | i | Cirsium scariosum Nutt. var.citrinum (Petr.) D. J. Keil | |
| 453130 | Cirsium quercetorum (A. Gray) Jeps. var. citrinum Petr. | Cirsium scariosum Nutt. var. citrinum (Petr.) D. J. Keil | 453129 | | i | Cirsium quercetorum (A. Gray) Jeps. var.citrinum Petr. | Cirsium scariosum Nutt. var.citrinum (Petr.) D. J. Keil |
| 453131 | Cirsium scariosum Nutt. var. robustum D. J. Keil | | | a | i | Cirsium scariosum Nutt. var.robustum D. J. Keil | |
| 453133 | Cirsium occidentale (Nutt.) Jeps. var. occidentale | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.occidentale | |
| 453135 | Cirsium occidentale (Nutt.) Jeps. var. coulteri (Harv. & A. Gray) Jeps. | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.coulteri (Harv. & A. Gray) Jeps. | |
| 453136 | Cirsium coulteri Harv. & A. Gray | Cirsium occidentale (Nutt.) Jeps. var. coulteri (Harv. & A. Gray) Jeps. | 453135 | | | Cirsium coulteri Harv. & A. Gray | Cirsium occidentale (Nutt.) Jeps. var.coulteri (Harv. & A. Gray) Jeps. |
| 453137 | Cirsium occidentale (Nutt.) Jeps. var. compactum Hoover | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.compactum Hoover | |
| 453138 | Cirsium occidentale (Nutt.) Jeps. var. californicum (A. Gray) D. J. Keil & C. E. Turner | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.californicum (A. Gray) D. J. Keil & C. E. Turner | |
| 453139 | Cirsium californicum A. Gray | Cirsium occidentale (Nutt.) Jeps. var. californicum (A. Gray) D. J. Keil & C. E. Turner | 453138 | | | Cirsium californicum A. Gray | Cirsium occidentale (Nutt.) Jeps. var.californicum (A. Gray) D. J. Keil & C. E. Turner |
| 453140 | Cirsium occidentale (Nutt.) Jeps. var. lucianum D. J. Keil | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.lucianum D. J. Keil | |
| 453141 | Cirsium occidentale (Nutt.) Jeps. var. venustum (Greene) Jeps. | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.venustum (Greene) Jeps. | |
| 453143 | Cirsium occidentale (Nutt.) Jeps. var. candidissimum (Greene) J. F. Macbr. | | | a | i | Cirsium occidentale (Nutt.) Jeps. var.candidissimum (Greene) J. F. Macbr. | |
| 453145 | Cirsium ochrocentrum A. Gray var. ochrocentrum | | | a | i | Cirsium ochrocentrum A. Gray var.ochrocentrum | |
| 453146 | Cirsium ochrocentrum A. Gray var. martinii (Barlow-Irick) D. J. Keil | | | a | i | Cirsium ochrocentrum A. Gray var.martinii (Barlow-Irick) D. J. Keil | |
| 453147 | Cirsium ochrocentrum A. Gray subsp. martinii Barlow-Irick | Cirsium ochrocentrum A. Gray var. martinii (Barlow-Irick) D. J. Keil | 453146 | | i | Cirsium ochrocentrum A. Gray subsp. martinii Barlow-Irick | Cirsium ochrocentrum A. Gray var.martinii (Barlow-Irick) D. J. Keil |
| 453149 | Cirsium remotifolium (Hook.) DC. var. remotifolium | | | a | i | Cirsium remotifolium (Hook.) DC. var.remotifolium | |
| 453150 | Cirsium remotifolium (Hook.) DC. var. odontolepis Petr. | | | a | i | Cirsium remotifolium (Hook.) DC. var.odontolepis Petr. | |
| 453151 | Cirsium remotifolium (Hook.) DC. var. rivulare Jeps. | | | a | i | Cirsium remotifolium (Hook.) DC. var.rivulare Jeps. | |
| 453153 | Cirsium inamoenum (Greene) D. J. Keil | | | a | | Cirsium inamoenum (Greene) D. J. Keil | |
| 453154 | Cirsium inamoenum (Greene) D. J. Keil var. inamoenum | | | a | i | Cirsium inamoenum (Greene) D. J. Keil var.inamoenum | |
| 453156 | Cirsium inamoenum (Greene) D. J. Keil var. davisii (Cronquist) D. J. Keil | | | a | i | Cirsium inamoenum (Greene) D. J. Keil var.davisii (Cronquist) D. J. Keil | |
| 453157 | Cirsium davisii Cronquist | Cirsium inamoenum (Greene) D. J. Keil var. davisii (Cronquist) D. J. Keil | 453156 | | | Cirsium davisii Cronquist | Cirsium inamoenum (Greene) D. J. Keil var.davisii (Cronquist) D. J. Keil |
| 453159 | Cirsium eatonii (A. Gray) B. L. Rob. | | | a | | Cirsium eatonii (A. Gray) B. L. Rob. | |
| 453160 | Cirsium eatonii (A. Gray) B. L. Rob. var. eatonii | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.eatonii | |
| 453161 | Cirsium eatonii (A. Gray) B. L. Rob. var. clokeyi (S. F. Blake) D. J. Keil | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.clokeyi (S. F. Blake) D. J. Keil | |
| 453162 | Cirsium clokeyi S. F. Blake | Cirsium eatonii (A. Gray) B. L. Rob. var. clokeyi (S. F. Blake) D. J. Keil | 453161 | | | Cirsium clokeyi S. F. Blake | Cirsium eatonii (A. Gray) B. L. Rob. var.clokeyi (S. F. Blake) D. J. Keil |
| 453163 | Cirsium eatonii (A. Gray) B. L. Rob. var. viperinum D. J. Keil | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.viperinum D. J. Keil | |
| 453164 | Cirsium eatonii (A. Gray) B. L. Rob. var. eriocephalum (A. Gray) D. J. Keil | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.eriocephalum (A. Gray) D. J. Keil | |
| 453166 | Cirsium eatonii (A. Gray) B. L. Rob. var. hesperium (Eastw.) D. J. Keil | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.hesperium (Eastw.) D. J. Keil | |
| 453168 | Cirsium eatonii (A. Gray) B. L. Rob. var. murdockii S. L. Welsh | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.murdockii S. L. Welsh | |
| 453169 | Cirsium eatonii (A. Gray) B. L. Rob. var. peckii (L. F. Hend.) D. J. Keil | | | a | i | Cirsium eatonii (A. Gray) B. L. Rob. var.peckii (L. F. Hend.) D. J. Keil | |
| 453170 | Cirsium peckii L. F. Hend. | Cirsium eatonii (A. Gray) B. L. Rob. var. peckii (L. F. Hend.) D. J. Keil | 453169 | | | Cirsium peckii L. F. Hend. | Cirsium eatonii (A. Gray) B. L. Rob. var.peckii (L. F. Hend.) D. J. Keil |
| 453171 | Cirsium murdockii (S. L. Welsh) Cronquist | Cirsium eatonii (A. Gray) B. L. Rob. var. murdockii S. L. Welsh | 453168 | | | Cirsium murdockii (S. L. Welsh) Cronquist | Cirsium eatonii (A. Gray) B. L. Rob. var.murdockii S. L. Welsh |
| 455347 | Cirsium arizonicum (A. Gray) Petr. var. bipinnatum (Eastw.) D. J. Keil | | | a | i | Cirsium arizonicum (A. Gray) Petr. var.bipinnatum (Eastw.) D. J. Keil | |
| 455348 | Cirsium calcareum (M. E. Jones) Wooton & Standl. | Cirsium arizonicum (A. Gray) Petr. var. bipinnatum (Eastw.) D. J. Keil | 455347 | | | Cirsium calcareum (M. E. Jones) Wooton & Standl. | Cirsium arizonicum (A. Gray) Petr. var.bipinnatum (Eastw.) D. J. Keil |
| 455351 | Cirsium parryi (A. Gray) Petr. | | | a | | Cirsium parryi (A. Gray) Petr. | |
| 455352 | Cirsium pallidum (Wooton & Standl.) Wooton & Standl. | Cirsium parryi (A. Gray) Petr. | 455351 | | | Cirsium pallidum (Wooton & Standl.) Wooton & Standl. | Cirsium parryi (A. Gray) Petr. |
| 455354 | Cirsium arizonicum (A. Gray) Petr. | | | a | | Cirsium arizonicum (A. Gray) Petr. | |
| 455355 | Cirsium rothrockii (A. Gray) Petr. | Cirsium arizonicum (A. Gray) Petr. var. rothrockii (A. Gray) D. J. Keil | 455356 | | | Cirsium rothrockii (A. Gray) Petr. | Cirsium arizonicum (A. Gray) Petr. var.rothrockii (A. Gray) D. J. Keil |
| 455356 | Cirsium arizonicum (A. Gray) Petr. var. rothrockii (A. Gray) D. J. Keil | | | a | i | Cirsium arizonicum (A. Gray) Petr. var.rothrockii (A. Gray) D. J. Keil | |
| 455359 | Cirsium sosnowskyi Kharadze | | | a | | Cirsium sosnowskyi Kharadze | |
| 461085 | Cirsium andersonii (A. Gray) Petr. | | | a | | Cirsium andersonii (A. Gray) Petr. | |
| 463806 | Cirsium texanum Buckley | | | a | | Cirsium texanum Buckley | |
| 465168 | Cirsium wheeleri (A. Gray) Petr. | | | a | | Cirsium wheeleri (A. Gray) Petr. | |
| 467693 | Cirsium rivulare (Jacq.) All. | | | a | | Cirsium rivulare (Jacq.) All. | |
| 468781 | Cirsium ciliolatum (L. F. Hend.) J. T. Howell | | | a | | Cirsium ciliolatum (L. F. Hend.) J. T. Howell | |
| 468782 | Cirsium undulatum (Nutt.) Spreng. var. ciliolatum L. F. Hend. | Cirsium ciliolatum (L. F. Hend.) J. T. Howell | 468781 | | i | Cirsium undulatum (Nutt.) Spreng. var.ciliolatum L. F. Hend. | Cirsium ciliolatum (L. F. Hend.) J. T. Howell |
| 468859 | Cirsium eriophorum (L.) Scop. | | | a | | Cirsium eriophorum (L.) Scop. | |
| 468949 | Cirsium pannonicum (L. f.) Link | | | a | | Cirsium pannonicum (L. f.) Link | |
| 477679 | Cirsium barnebyi S. L. Welsh & Neese | | | a | | Cirsium barnebyi S. L. Welsh & Neese | |
| 480737 | Cirsium maritimum Makino | | | a | | Cirsium maritimum Makino | |
| 481421 | Cirsium arizonicum (A. Gray) Petr. var. arizonicum | | | a | i | Cirsium arizonicum (A. Gray) Petr. var.arizonicum | |
| 486121 | Cirsium chanroenicum (Nakai) Nakai | | | a | | Cirsium chanroenicum (Nakai) Nakai | |
| 487195 | Cirsium ochrocentrum A. Gray subsp. ochrocentrum | Cirsium ochrocentrum A. Gray var. ochrocentrum | 453145 | | i | Cirsium ochrocentrum A. Gray subsp. ochrocentrum | Cirsium ochrocentrum A. Gray var.ochrocentrum |
| 487196 | Cirsium quercetorum (A. Gray) Jeps. var. quercetorum | Cirsium quercetorum (A. Gray) Jeps. | 452114 | | i | Cirsium quercetorum (A. Gray) Jeps. var.quercetorum | Cirsium quercetorum (A. Gray) Jeps. |
| 487197 | Cirsium undulatum (Nutt.) Spreng. var. undulatum | Cirsium undulatum (Nutt.) Spreng. | 316627 | | i | Cirsium undulatum (Nutt.) Spreng. var.undulatum | Cirsium undulatum (Nutt.) Spreng. |
| 488354 | Cirsium arvense (L.) Scop. var. vestitum Wimm. & Grab. | Cirsium arvense (L.) Scop. | 100755 | | i | Cirsium arvense (L.) Scop. var.vestitum Wimm. & Grab. | Cirsium arvense (L.) Scop. |
| 488355 | Cirsium arvense (L.) Scop. var. integrifolium Wimm. & Grab. | Cirsium arvense (L.) Scop. | 100755 | | i | Cirsium arvense (L.) Scop. var.integrifolium Wimm. & Grab. | Cirsium arvense (L.) Scop. |
| 488356 | Cirsium arvense (L.) Scop. var. horridum Wimm. & Grab. | Cirsium arvense (L.) Scop. | 100755 | | i | Cirsium arvense (L.) Scop. var.horridum Wimm. & Grab. | Cirsium arvense (L.) Scop. |
| 488357 | Cirsium arvense (L.) Scop. var. arvense | Cirsium arvense (L.) Scop. | 100755 | | i | Cirsium arvense (L.) Scop. var.arvense | Cirsium arvense (L.) Scop. |
| 490120 | Cirsium dipsacolepis (Maxim.) Matsum. | | | a | | Cirsium dipsacolepis (Maxim.) Matsum. | |
| 490472 | Cirsium drummondii Torr. & A. Gray | | | a | | Cirsium drummondii Torr. & A. Gray | |
| 491014 | Cirsium douglasii DC. var. breweri (A. Gray) D. J. Keil & C. E. Turner | | | a | i | Cirsium douglasii DC. var.breweri (A. Gray) D. J. Keil & C. E. Turner | |
| 491015 | Cirsium douglasii DC. var. douglasii | | | a | i | Cirsium douglasii DC. var.douglasii | |
| 491016 | Cirsium douglasii DC. | | | a | | Cirsium douglasii DC. | |
| 491286 | Cirsium acaule (L.) Scop. | | | a | | Cirsium acaule (L.) Scop. | |
| 491287 | Cirsium acaule (L.) Scop. var. acaule | Cirsium acaule (L.) Scop. | 491286 | | i | Cirsium acaule (L.) Scop. var.acaule | Cirsium acaule (L.) Scop. |
| 493192 | Cirsium brevifolium Nutt. | | | a | | Cirsium brevifolium Nutt. | |