⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record gcc-100690, with some changes.
This name is a synonym of Helianthus laevigatus Torr. & A.Gray.
The record derives from TICA which reports it as a synonym (record F902E0BB-8340-4E73-875B-9B3137F603DA) with original publication details: 85 1789.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:329254-2.