The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-139016, with some changes.

M Cirsium spathulifolium Rydb. is a synonym of Cirsium clavatum var. americanum (A.Gray) D.J.Keil

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

The record derives from TICA which reports it as a synonym (record F919ACE3-AACD-4154-9A91-F1D32BCE15B4) with original publication details: Fl. Rocky Mts. 1011 1917.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:291853-2.