The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-87066, with some changes.

M Helianthus rigidus (Cass.) Desf. is a synonym of Helianthus pauciflorus subsp. pauciflorus Nutt.

This name is a synonym of Helianthus pauciflorus subsp. pauciflorus Nutt..

The record derives from TICA which reports it as a synonym (record E042421E-F98E-4A32-A9A9-7C69CAABA006) with original publication details: 184 1829.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:212245-1.