You selected Cirsium canescens A.Gray. This is a synonym for:

Accepted scientific name:
Cirsium neomexicanum A.Gray (provisionally accepted name)
Synonyms:
Carduus neomexicanus (A.Gray) Greene (synonym)
Carduus nevadensis Greene (synonym)
Cirsium arcuum A.Nelson (synonym)
Cirsium canescens A.Gray (synonym)
Cirsium humboldtense Rydb. (synonym)
Cirsium nevadense (Greene) Petr. (synonym)
Cirsium utahense Petr. (synonym)
Cirsium wallowense (synonym)
Cnicus neomexicanus (A.Gray) A.Gray (synonym)
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Asterales
Family Asteraceae
Genus Cirsium
Distribution: -
Additional data: Data Providers: CONABIO, Govaerts World Compositae Checklist A-G, IPNI, Tropicos. GCC LSID: urn:lsid:compositae.org:names:91DF670C-F91A-433A-935C-3B8FD62ADF5C
Source database: GCC, 1 (Beta), Nov 2009
Latest taxonomic scrutiny: Flann C., 12-Aug-09
Online resource: -
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:1eef5422-60a7-102d-be47-00304854f810:ac2010