⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2760061, and has not been changed.
This name is a synonym of Delphinium menziesii subsp. pyramidale Ewan.
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Vasc. Pl. Pacific Northw. 2: 355 1964.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:77422-2.