⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record gcc-53377, with some changes.
This name is a synonym of Heterotheca sessiliflora subsp. echioides .
The record derives from TICA which reports it as a synonym (record 07CF3F34-ABEB-40A8-8F1D-65BB40257054
) with original publication details: Bot. California 1 309 1876.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:57946-2
.