⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-2961, and has not been changed.

Carduus americanus (A.Gray) Rydb. is a synonym of Cirsium scariosum var. americanum (A.Gray) D.J.Keil

This name is a synonym of Cirsium scariosum var. americanum (A.Gray) D.J.Keil.

The record derives from TICA which reports it as a synonym and as an illegitimate name (record 82495412-C717-4D8D-955B-057EFD59E822) with original publication details: Bull. Torrey Bot. Club 28 508 1901.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:45490-2.