⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2802017, with some changes.
This name is a synonym of Eschscholzia caespitosa Benth..
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Notizbl. Königl. Bot. Gart. Berlin 4: 153 1905.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:97261-2.