⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-14501, with some changes.

Silphium compositum subsp. reniforme (Raf. ex Nutt.) 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 14481BAD-1638-4ED8-9F1B-1AE6E5DE254E) with original publication details: Ohio J. Sci. 70: 230. 1970 230 1970.