Coloradense2
- C. acaulescens , C . congdonii, C. coloradense , and C. scariosum in the restricted sense. (swbiodiversity.org)
- Cirsium coahuilense Ownbey & Pinkava Cirsium coloradense (Rydb. (wikipedia.org)
Nutt5
- Cirsium scariosum Nutt. (swbiodiversity.org)
- Cirsium brachycephalum Juratzka Cirsium bracteiferum C.Shih Cirsium × braun-blanquetianum Lawalrée Cirsium × breunium Goller & Huter Cirsium brevicaule A.Gray Cirsium brevifolium Nutt. (wikipedia.org)
- Cirsium × candolleanum Nägeli Cirsium canescens Nutt. (wikipedia.org)
- Cirsium edule Nutt. (wikipedia.org)
- Cirsium undulatum (Nutt. (swbiodiversity.org)
Cockerell2
- Cirsium congdonii R.J.Moore & Frankton, Cirsium erosum Cockerell ex Daniels, Cirsium kelseyi Rydb. (swbiodiversity.org)
- Cockerell ex Daniels Cirsium confertissimum Nakai Cirsium congdonii R.J.Moore & Frankton Cirsium congestissimum Kitam. (wikipedia.org)
Canescens1
- However, most reports of Cirsium undulatum in California are based upon misidentifications of C. canescens . (swbiodiversity.org)
Spreng2
- L.Gubellini Cirsium alsophilum (Pollini) Soldano Cirsium altissimum (L.) Spreng. (wikipedia.org)
- Cirsium badakhschanicum Kharadze Cirsium barnebyi S.L.Welsh & Neese Cirsium bertolonii Spreng. (wikipedia.org)
Flodmanii2
- Cirsium flodmanii Arthur Cirsium foliosum DC. (wikipedia.org)
- Cirsium undulatum is known to hybridize with C. flodmanii, C. hookerianum , and C. scariosum var. (swbiodiversity.org)
Widely distributed2
- Cirsium scariosum is a widely distributed complex of intergrading races distributed from southwestern Canada to northwestern Mexico. (swbiodiversity.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)
Welsh2
- S. L. Welsh (1982) proposed C. scariosum var. (swbiodiversity.org)
- Cronquist (1994) treated C. scariosum as an extremely variable species that included the four species recognized by Moore and Frankton plus the variety proposed by Welsh. (swbiodiversity.org)
Moore1
- Cirsium charkeviczii Barkalov Cirsium × chatenieri Legrand ex H.J.Coste Cirsium chellyense R.J.Moore & Frankton Cirsium chikabumiense Kadota Cirsium chikushiense Koidz. (wikipedia.org)
Species4
- F. Petrak (1917) recognized ten species plus several subspecies for the taxa I am treating here as C. scariosum (in the broad sense). (swbiodiversity.org)
- The latter two species, while clearly related to C. scariosum , have a range restricted mostly to Canada. (swbiodiversity.org)
- The following species in the flowering plant genus Cirsium, the plume thistles, are accepted by Plants of the World Online. (wikipedia.org)
- A 2022 molecular study reassigned many species to other genera, but Cirsium remains a speciose genus. (wikipedia.org)
Gray3
- Cirsium arizonicum (A.Gray) Petr. (wikipedia.org)
- A.Gray Cirsium ducellieri Maire Cirsium durangense (Greenm. (wikipedia.org)
- Cirsium grahamii A.Gray Cirsium × grandiflorum Kitt. (wikipedia.org)
Variable1
- Cirsium undulatum is both widespread and variable. (swbiodiversity.org)