• Cirsium P. Miller, 1754
• Cirsium acanthodontum Blake accepted as Cirsium remotifolium (Hook.) DC.
• Cirsium acaule Scop.
• Cirsium acaulescens (Rydb.) K. Schum. accepted as Cirsium tioganum (Congd.) Petrak
• Cirsium acuatum (Osterhout) Petrak accepted as Cirsium undulatum (Nutt.) Spreng.
• Cirsium altissimum (L.) Hill
• Cirsium amblylepis Petrak
• Cirsium americanum (Gray) K. Schum. accepted as Cirsium tioganum (Congd.) Petrak
• Cirsium andersonii (Gray) Petrak
• Cirsium andrewsii (Gray) Jepson
• Cirsium araneans Rydb.
• Cirsium arcuum A. Nels.
• Cirsium aridum Dorn
• Cirsium arizonicum (Gray) Petrak
• Cirsium arvense (L.) Scop.
• Cirsium barnebyi Welsh & Neese
• Cirsium bigelovii DC. accepted as Cirsium muticum Michx.
• Cirsium bipinnatum (Eastw.) Rydb. accepted as Cirsium calcareum (M.E. Jones) Woot. & Standl.
• Cirsium blumeri Petrak accepted as Cirsium wheeleri (Gray) Petrak
• Cirsium botrys Petrak accepted as Cirsium ciliolatum (Henderson) J.T. Howell
• Cirsium brevifolium Nutt.
• Cirsium brevistylum Cronq.
• Cirsium breweri (Gray) Jepson accepted as Cirsium douglasii DC.
• Cirsium butleri (Rydb.) Petrak accepted as Cirsium scariosum Nutt.
• Cirsium calcareum (M.E. Jones) Woot. & Standl.
• Cirsium californicum Gray accepted as Cirsium occidentale (Nutt.) Jepson
• Cirsium callilepis (Greene) Jepson accepted as Cirsium remotifolium (Hook.) DC.
• Cirsium campylon H.K. Sharsmith accepted as Cirsium fontinale (Greene) Jepson
• Cirsium canalense Petrak
• Cirsium candidissimum (Greene) A. Davids. & Moxley accepted as Cirsium pastoris J.T. Howell
• Cirsium canescens Nutt.
• Cirsium canovirens (Rydb.) Petrak
• Cirsium canum (L.) All.
• Cirsium carolinianum (Walt.) Fern. & Schub.
• Cirsium centaureae (Rydb.) K. Schum. accepted as Cirsium remotifolium (Hook.) DC.
• Cirsium chellyense Moore & Frankton
• Cirsium chuskaense Moore & Frankton
• Cirsium ciliolatum (Henderson) J.T. Howell
• Cirsium clavatum (M.E. Jones) Petrak
• Cirsium clokeyi Blake
• Cirsium coccinatum Osterhout accepted as Cirsium drummondii Torr. & Gray
• Cirsium coloradense (Rydb.) Cockerell accepted as Cirsium tioganum (Congd.) Petrak
• Cirsium congdonii Moore & Frankton
• Cirsium coulteri Harvey & Gray accepted as Cirsium occidentale (Nutt.) Jepson
• Cirsium crassicaule (Greene) Jepson
• Cirsium crassum Petrak
• Cirsium cymosum (Greene) J.T. Howell
• Cirsium davisii Cronq. accepted as Cirsium subniveum Rydb.
• Cirsium diffusum (Eastw.) Rydb. accepted as Cirsium rothrockii (Gray) Petrak
• Cirsium discolor (Muhl. ex Willd.) Spreng.
• Cirsium douglasii DC.
• Cirsium drummondii Torr. & Gray
• Cirsium eatonii (Gray) B.L. Robins.
• Cirsium edule Nutt.
• Cirsium engelmannii Rydb.
• Cirsium eriocephalum Gray accepted as Cirsium scopulorum (Greene) Cockerell ex Daniels
• Cirsium erosum (Rydb.) K. Schum.
• Cirsium filipendulum Engelm. accepted as Cirsium engelmannii Rydb.
• Cirsium flaccidum Small accepted as Cirsium carolinianum (Walt.) Fern. & Schub.
• Cirsium floccosum (Rydb.) Petrak accepted as Cirsium undulatum (Nutt.) Spreng.
• Cirsium flodmanii (Rydb.) Arthur
• Cirsium foliosum (Hook.) DC.
• Cirsium fontinale (Greene) Jepson
• Cirsium gilense Woot. & Standl.
• Cirsium grahamii Gray
• Cirsium griseum (Rydb.) K. Schum.
• Cirsium hallii (Gray) M.E. Jones
• Cirsium helenioides (L.) Hill
• Cirsium helleri (Small) Cory accepted as Cirsium undulatum (Nutt.) Spreng.
• Cirsium hesperium (Eastw.) Petrak accepted as Cirsium scopulorum (Greene) Cockerell ex Daniels
• Cirsium hillii (Canby) Fern.
• Cirsium hookerianum Nutt.
• Cirsium horridulum Michx.
• Cirsium howellii Petrak accepted as Cirsium ciliolatum (Henderson) J.T. Howell
• Cirsium humboldtense Rydb.
• Cirsium hydrophilum (Greene) Jepson
• Cirsium incanum (Gmel.) Fisch. accepted as Cirsium arvense (L.) Scop.
• Cirsium inornatum Woot. & Standl.
• Cirsium iowense (Pammel) Fern.
• Cirsium kamtschaticum Ledeb. ex DC.
• Cirsium kelseyi (Rydb.) Petrak accepted as Cirsium scariosum Nutt.
• Cirsium lacerum (Rydb.) Petrak accepted as Cirsium scariosum Nutt.
• Cirsium lactucinum Rydb. accepted as Cirsium rydbergii Petrak
• Cirsium lanceolatum (L.) Scop. accepted as Cirsium vulgare (Savi) Ten.
• Cirsium laterifolium (Osterhout) Petrak
• Cirsium lecontei Torr. & Gray
• Cirsium loncholepis Petrak
• Cirsium longistylum Moore & Frankton
• Cirsium macounii (Greene) Rydb. accepted as Cirsium edule Nutt.
• Cirsium magnificum (A. Nels.) Petrak accepted as Cirsium scariosum Nutt.
• Cirsium maritimum (Elmer) Petrak accepted as Cirsium rhothophilum Blake
• Cirsium megacephalum (Gray) Cockerell accepted as Cirsium undulatum (Nutt.) Spreng.
• Cirsium mendocinum Petrak
• Cirsium mexicanum DC.
• Cirsium minganense Victorin accepted as Cirsium scariosum Nutt.
• Cirsium modestum (Osterhout) Cockerell
• Cirsium mohavense (Greene) Petrak
• Cirsium montigenum Petrak accepted as Cirsium hydrophilum (Greene) Jepson
• Cirsium murdockii (Welsh) Cronq.
• Cirsium muticum Michx.