⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-29200104, with some changes.
This name is a synonym of Castilleja densiflora var. gracilis .
The record derives from Tropicos which reports it as a synonym (record 29200104
) with original publication details: Proc. Calif. Acad. Sci., ser. 4, 16(17): 538 538 1927.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:176733-2
.