⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-3118, with some changes.

Cirsium horridulum subsp. megacephalum Petr. is a synonym of Cirsium horridulum Michx.

This name is a synonym of Cirsium horridulum Michx..

The record derives from TICA which reports it as a synonym (record 7E48528B-053D-4310-B164-05C2077AA0C8) with original publication details: 384 1917.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:59042-2.