⚠ Version 1 of The Plant List has been superseded.

This name record (from WCSP (in review)) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Euphrasia williamsii in version 1.1 of The Plant List.

Euphrasia williamsii var. vestita Fernald & Wiegand is a synonym of Euphrasia oakesii Wettst.

This name is a synonym of Euphrasia oakesii Wettst..

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Rhodora 17: 186 1915.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:102188-2.