⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2705278, with some changes.
This name is a synonym of Castilleja arachnoidea Greenm..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Notul. Nat. Acad. Nat. Sci. Philadelphia 74: 3 1941.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:49691-2.