⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record gcc-9147, and has not been changed.

Rudbeckia apetala Torr. ex Nutt. is an unresolved name

This name is unresolved, but some data suggest that it is synonymous with Helianthus atrorubens subsp. radula (Pursh) Anashch..

The record derives from TICA which does not establish this name either as an accepted name or as a synonym (record 415A3460-D993-4AC4-87CC-111A34232BE8) with original publication details: in Journ. Acad. Philad. vii. (1834) 77. 1834.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:241664-1.