⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2737408, and has not been changed.
This name is a synonym of Cordylanthus kingii subsp. helleri .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Intermountain Fl. 4: 505 1984.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:923146-1
.