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Classification
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Classification for Kingdom Plantae Down to Genus Cirsium Mill.

Click on names to expand them, and on P for PLANTS profiles.

 
Up to the Kingdom
Kingdom  Plantae – Plants
Subkingdom  Tracheobionta – Vascular plants
Superdivision  Spermatophyta – Seed plants
Division  Magnoliophyta – Flowering plants
Class  Magnoliopsida – Dicotyledons
Subclass  Asteridae
Order  Asterales
Family  Asteraceae – Aster family
Genus  Cirsium Mill. – thistle P
 
Contains 95 Species and 111 accepted taxa overall
 
Down one level
 
Species  Cirsium altissimum (L.) Hill – tall thistle P
Species  Cirsium andersonii (A. Gray) Petr. – rose thistle P
Species  Cirsium andrewsii (A. Gray) Jeps. – Franciscan thistle P
Species  Cirsium araneans Rydb. – jeweled thistle P
Species  Cirsium aridum Dorn – desert thistle P
Species  Cirsium arizonicum (A. Gray) Petr. – Arizona thistle P
Species  Cirsium arvense (L.) Scop. – Canada thistle P
Species  Cirsium barnebyi S.L. Welsh & Neese – Barneby's thistle P
Species  Cirsium brevifolium Nutt. – Palouse thistle P
Species  Cirsium brevistylum Cronquist – clustered thistle P
Species  Cirsium calcareum (M.E. Jones) Woot. & Standl. – Cainville thistle P
Species  Cirsium ×canalense Petr. [excluded] P
Species  Cirsium canescens Nutt. – prairie thistle P
Species  Cirsium canovirens (Rydb.) Petr. – graygreen thistle P
Species  Cirsium canum (L.) All. – Queen Anne's thistle P
Species  Cirsium carolinianum (Walter) Fernald & B.G. Schub. – soft thistle P
Species  Cirsium centaureae (Rydb.) K. Schum. – fringed thistle P
Species  Cirsium chellyense J.W. Moore & Frankton – queen thistle P
Species  Cirsium chuskaense J.W. Moore & Frankton – monarch thistle P
Species  Cirsium ciliolatum (L.F. Hend.) J.T. Howell – Ashland thistle P
Species  Cirsium clavatum (M.E. Jones) Petr. – Fish Lake thistle P
Species  Cirsium clokeyi S.F. Blake – whitespine thistle P
Species  Cirsium crassicaule (Greene) Jeps. – slough thistle P
Species  Cirsium ×crassum Petr. [excluded] P
Species  Cirsium cymosum (Greene) J.T. Howell – peregrine thistle P
Species  Cirsium discolor (Muhl. ex Willd.) Spreng. – field thistle P
Species  Cirsium douglasii DC. – Douglas' thistle P
Variety  Cirsium douglasii DC. var. breweri (A. Gray) D.J. Keil & C.E. Turner – Douglas' thistle P
Variety  Cirsium douglasii DC. var. douglasii – Douglas' thistle P
Species  Cirsium drummondii Torr. & A. Gray – dwarf thistle P
Species  Cirsium eatonii (A. Gray) B.L. Rob. – Eaton's thistle P
Species  Cirsium edule Nutt. – edible thistle P
Species  Cirsium engelmannii Rydb. – Engelmann's thistle P
Species  Cirsium flodmanii (Rydb.) Arthur – Flodman's thistle P
Species  Cirsium foliosum (Hook.) DC. – elk thistle P
Species  Cirsium fontinale (Greene) Jeps. – fountain thistle P
Variety  Cirsium fontinale (Greene) Jeps. var. campylon (H. Sharsm.) Pilz ex Keil & C. Turner – Mt. Hamilton thistle P
Variety  Cirsium fontinale (Greene) Jeps. var. fontinale – fountain thistle P
Variety  Cirsium fontinale (Greene) Jeps. var. obispoense J.T. Howell – Chorro Creek Bog thistle P
Species  Cirsium gilense Woot. & Standl. – Gila thistle P
Species  Cirsium grahamii A. Gray – Graham's thistle P
Species  Cirsium helenioides (L.) Hill – melancholy thistle P
Species  Cirsium hillii (Canby) Fernald – Hill's thistle P
Species  Cirsium hookerianum Nutt. – white thistle P
Species  Cirsium horridulum Michx. – yellow thistle P
Variety  Cirsium horridulum Michx. var. horridulum – yellow thistle P
Variety  Cirsium horridulum Michx. var. vittatum (Small) R.W. Long – yellow thistle P
Species  Cirsium hydrophilum (Greene) Jeps. – Suisun thistle P
Variety  Cirsium hydrophilum (Greene) Jeps. var. hydrophilum – Suisun thistle P
Variety  Cirsium hydrophilum (Greene) Jeps. var. vaseyi (A. Gray) J.T. Howell – Vasey's thistle P
Species  Cirsium inornatum Woot. & Standl. – cloudcroft thistle P
Species  Cirsium ×iowense (Pammel) Fernald (pro sp.) – thistle P
Species  Cirsium japonicum Fisch. ex DC. – Japanese thistle P
Species  Cirsium kamtschaticum Ledeb. ex DC. – Kamchatka thistle P
Species  Cirsium laterifolium (Osterh.) Petr. – porcupine thistle P
Species  Cirsium lecontei Torr. & A. Gray – Le Conte's thistle P
Species  Cirsium loncholepis Petr. – la graciosa thistle P
Species  Cirsium longistylum J.W. Moore & Frankton – longstyle thistle P
Species  Cirsium mexicanum DC. – Mexican thistle P
Species  Cirsium modestum (Osterh.) Cockerell – lacy thistle P
Species  Cirsium mohavense (Greene) Petr. – Mojave thistle P
Species  Cirsium murdockii (S.L. Welsh) Cronquist – Murdock's thistle P
Species  Cirsium muticum Michx. – swamp thistle P
Species  Cirsium navajoense J.W. Moore & Frankton – Navajo thistle P
Species  Cirsium neomexicanum A. Gray – New Mexico thistle P
Species  Cirsium nuttallii DC. – Nuttall's thistle P
Species  Cirsium occidentale (Nutt.) Jeps. – cobwebby thistle P
Variety  Cirsium occidentale (Nutt.) Jeps. var. californicum (A. Gray) Keil & C. Turner – cobwebby thistle P
Variety  Cirsium occidentale (Nutt.) Jeps. var. candidissimum (Greene) J.F. Macbr. – snowy thistle P
Variety  Cirsium occidentale (Nutt.) Jeps. var. compactum Hoover – compact cobwebby thistle P
Variety  Cirsium occidentale (Nutt.) Jeps. var. occidentale – cobwebby thistle P
Variety  Cirsium occidentale (Nutt.) Jeps. var. venustum (Greene) Jeps. – cobwebby thistle P
Species  Cirsium ochrocentrum A. Gray – yellowspine thistle P
Subspecies  Cirsium ochrocentrum A. Gray ssp. martinii P. Barlow – yellowspine thistle P
Subspecies  Cirsium ochrocentrum A. Gray ssp. ochrocentrum – yellowspine thistle P
Species  Cirsium osterhoutii (Rydb.) Petr. – Osterhout's thistle P
Species  Cirsium ownbeyi S.L. Welsh – Ownbey's thistle P
Species  Cirsium pallidum Woot. & Standl. – pale thistle P
Species  Cirsium palustre (L.) Scop. – marsh thistle P
Species  Cirsium parryi (A. Gray) Petr. – Parry's thistle P
Subspecies  Cirsium parryi (A. Gray) Petr. ssp. mogollonicum C. Schaack & G. Goodwin – Mogollon thistle P
Subspecies  Cirsium parryi (A. Gray) Petr. ssp. parryi – Parry's thistle P
Species  Cirsium peckii L.F. Hend. – Steen Mountain thistle P
Species  Cirsium perplexans (Rydb.) Petr. – Rocky Mountain thistle P
Species  Cirsium pitcheri (Torr. ex Eaton) Torr. & A. Gray – sand dune thistle P
Species  Cirsium praeteriens J.F. Macbr. – Palo Alto thistle P
Species  Cirsium pulcherrimum (Rydb.) K. Schum. – Wyoming thistle P
Species  Cirsium pumilum Spreng. – pasture thistle P
Species  Cirsium pyrenaicum (Jacq.) All. – Pyrenean thistle P
Species  Cirsium quercetorum (A. Gray) Jeps. – Alameda County thistle P
Species  Cirsium remotifolium (Hook.) DC. – fewleaf thistle P
Species  Cirsium repandum Michx. – sandhill thistle P
Species  Cirsium rhothophilum S.F. Blake – surf thistle P
Species  Cirsium rothrockii (A. Gray) Petr. – Rothrock's thistle P
Species  Cirsium rusbyi (Greene) Petr. – Rusby's thistle P
Species  Cirsium rydbergii Petr. – Rydberg's thistle P
Species  Cirsium scabrum (Poir.) Bonnet & Barratte – rough thistle P
Species  Cirsium scapanolepis Petr. – mountain slope thistle P
Species  Cirsium scariosum Nutt. – meadow thistle P
Species  Cirsium scopulorum (Greene) Cockerell ex Daniels – mountain thistle P
Species  Cirsium subniveum Rydb. – Jackson Hole thistle P
Species  Cirsium texanum Buckley – Texas thistle P
Species  Cirsium turneri Warnock – cliff thistle P
Species  Cirsium undulatum (Nutt.) Spreng. – wavyleaf thistle P
Variety  Cirsium undulatum (Nutt.) Spreng. var. tracyi (Rydb.) S.L. Welsh – Tracy's thistle P
Variety  Cirsium undulatum (Nutt.) Spreng. var. undulatum – wavyleaf thistle P
Species  Cirsium validus Greene [excluded] P
Species  Cirsium ×vancouverense J.W. Moore & Frankton – Vancouver thistle P
Species  Cirsium vernale (Osterh.) Cockerell – spring thistle P
Species  Cirsium vinaceum Woot. & Standl. – Sacramento Mountain thistle P
Species  Cirsium virginense S.L. Welsh – virgin thistle P
Species  Cirsium virginianum (L.) Michx. – Virginia thistle P
Species  Cirsium vulgare (Savi) Ten. – bull thistle P
Species  Cirsium wheeleri (A. Gray) Petr. – Wheeler's thistle P
Species  Cirsium wrightii A. Gray – Wright's thistle P

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