⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2706039, with some changes.

Caulanthus procerus (Brewer ex A.Gray) S.Watson is a synonym of Guillenia flavescens (Hook.) Greene

This name is a synonym of Guillenia flavescens (Hook.) Greene.

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Botany [Fortieth Parallel] 27 1871.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:280860-1.