⚠ Version 1 of The Plant List has been superseded.
This name record (from TICA) 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 Lactuca oldhami in version 1.1 of The Plant List.
This name is a synonym of Ixeridium laevigatum .
The record derives from TICA which reports it as a synonym (record BD769D45-B452-452D-8A7B-46D47C041734
) with original publication details: 1874.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:228151-1
.