This name is a synonym of Cirsium parryi (A.Gray) Petr..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 15DF8CE6-25B0-4639-A167-7A88D5B76AF8) with original publication details: Contr. U. S. Natl. Herb. 19 751 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:59049-2.
This name was in version 1 of The Plant List, record gcc-86264.