⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2693949, and has not been changed.
This name is a synonym of Caltha leptosepala var. howellii .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Taxon. Stud. N. Amer. Ranunculaceae 15 1900.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:42884-2
.