⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2799193, and has not been changed.
This name is a synonym of Eryngium heterophyllum Engelm..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Contr. U. S. Natl. Herb. 10: 129 1906.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:96284-2.