⚠ Version 1 of The Plant List has been superseded.

This name record (from TICA) 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 Silphium compositum in version 1.1 of The Plant List.

Silphium compositum subsp. venosum (Small) is a synonym of Silphium compositum Michx.

This name is a synonym of Silphium compositum Michx..

The record derives from TICA which reports it as a synonym (record F89032CD-6F25-4B5E-95CD-96596D2CDDDE) with original publication details: Ohio J. Sci. 70: 232. 1970 232 1970.