• Cirsium arizonicum, the Arizona thistle, is a North American species of thistle in the family Asteraceae, native to the southwestern United States and northwestern Mexico. (wikipedia.org)
  • Desert mountains thistle - California, Nevada, Sonora The Plant List, Cirsium arizonicum (A.Gray) Petr. (wikipedia.org)
  • Cirsium iowense , Cnicus altissimus (L.) Willd. (vplants.org)
  • Flora of North America: Cirsium arizonicum Jepson Flora: Cirsium arizonicum USDA Plants Profile: Cirsium arizonicum Biota of North America Program 2014 county distribution map Calflora taxon report, University of Arizona, Cirsium arizonicum (A. Gray) Petrak Arizona thistle SEINet Southwestern Biodiversity, Arizona Chapter, Cirsium arizonicum includes photos, description, distribution map Phillips, III, Arthur (1979). (wikipedia.org)
  • Petrak) S.L.Welsh, Cirsium utahense Petr. (intermountainbiota.org)
  • chellyense (R.J.Moore & Frankton) D.J.Keil (syn. (wikipedia.org)
  • C. chellyense R.J.Moore & Frankton) Navajo thistle - Arizona, New Mexico Cirsium arizonicum var. (wikipedia.org)
  • After consulting with A. Cronquist and studying his manuscript treatment of Cirsium for the Intermountain Flora , D. J. Keil and C. E. Turner (1993) also accepted a broadly construed C. scariosum . (swbiodiversity.org)
  • Thistle be a mess: Untangling the taxonomy of Cirsium (Cardueae: Compositae) in North America [J]. J Syst Evol, 2020, 58(6): 881-912. (jse.ac.cn)
  • Cirsium is Greek for thistle, while wheeleri is named for George Wheeler (1842-1905) who mapped the Great Basin and Mojave deserts. (intermountainbiota.org)
  • Desert thistle is widespread in the Mojave and Sonoran deserts and ranges into the southern Great Basin desert, western Chihuahuan desert, and into adjacent mountains of Utah, southwestern Colorado, Arizona, and New Mexico. (intermountainbiota.org)
  • Cirsium undulatum is widely distributed in the wstern half of North America from the dry plains and plateaus of the Pacific Northwest eastward across the Great Plains to Manitoba and the Dakotas and south to Texas, New Mexico, and northwestern Mexico. (swbiodiversity.org)
  • Cirsium scariosum is a widely distributed complex of intergrading races distributed from southwestern Canada to northwestern Mexico. (swbiodiversity.org)
  • Cirsium barnebyi occurs from the southern Rocky Mountains of southwestern Wyoming, northeastern Utah, and northwestern Colorado. (asu.edu)
  • Cirsium wheeleri occurs from the mountains of the Colorado Plateau of central Utah and southwestern Colorado south through the highlands of Arizona and New Mexico to southwestern Texas and northwestern Mexico. (intermountainbiota.org)
  • Flora of North America: Cirsium arizonicum Jepson Flora: Cirsium arizonicum USDA Plants Profile: Cirsium arizonicum Biota of North America Program 2014 county distribution map Calflora taxon report, University of Arizona, Cirsium arizonicum (A. Gray) Petrak Arizona thistle SEINet Southwestern Biodiversity, Arizona Chapter, Cirsium arizonicum includes photos, description, distribution map Phillips, III, Arthur (1979). (wikipedia.org)
  • The name of Cirsium foliosum was misapplied to many plants in the western U.S. (Keil in Flora of North America 2006). (mt.gov)
  • Many specimens have been annotated to Cirsium scariosum which is a highly variable (polymorphic) species (Keil in Flora of North America 2006). (mt.gov)
  • Cirsium arizonicum is a herbaceous plant that can be either biennial or perennial, reaching 30-150 cm in height. (wikipedia.org)
  • Five varieties have been identified: Cirsium arizonicum var. (wikipedia.org)
  • C. chellyense R.J.Moore & Frankton) Navajo thistle - Arizona, New Mexico Cirsium arizonicum var. (wikipedia.org)
  • Desert mountains thistle - California, Nevada, Sonora The Plant List, Cirsium arizonicum (A.Gray) Petr. (wikipedia.org)
  • Cirsium arizonicum (A. Gray) Petr. (swbiodiversity.org)
  • The Cirsium arizonicum complex is widely distributed from the Sierra Nevada, White Mountains, and New York Mountains of eastern California across the mountains of the southern Great Basin and Colorado Plateau to the mountains of eastern Colorado, Arizona, and New Mexico. (swbiodiversity.org)
  • Cirsium arizonicum is a rapidly evolving, only partially differentiated assemblage of races that have not reached the level of stability that is usually associated with the concept of species. (swbiodiversity.org)
  • In the Yukon, Northwest Territories, British Columbia, and Alberta provinces of Canada and in the mountains of Wyoming, U.S. (Keil in FNA 2006). (mt.gov)