⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record gcc-70035, and has not been changed.
This name is a synonym of Silphium perfoliatum var. connatum .
The record derives from TICA which reports it as a synonym (record 5F66463A-DF1D-46D2-A3F4-EAE538232EC8
) with original publication details: Castanea 27: 90. 1962 90 1962.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:236463-2
.