⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-81786, and has not been changed.

Euphorbia pycnanthema f. serrata Millsp. is a synonym of Euphorbia capitellata Engelm.

This name is a synonym of Euphorbia capitellata Engelm..

The record derives from WCSP which reports it as a synonym (record 81786) with original publication details: Proc. Calif. Acad. Sci. II, 2: 224 1889.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:101939-2.