⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Cnicus altissimus in version 1.1 of The Plant List.
This name is a synonym of Cirsium texanum .
The record derives from Tropicos which reports it as a synonym (record 50190961
) with original publication details: Proc. Amer. Acad. Arts 19: 57 57 1883.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:61754-2
.