⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record gcc-107869, and has not been changed.
This name is a synonym of Silphium radula var. gracile .
The record derives from TICA which reports it as a synonym (record 73D0B1D0-BB56-4D41-88BA-AB143E51B8C1
) with original publication details: Proc. Amer. Acad. Arts viii. (1873) 653. 1873.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:249139-1
.