The record derives from TICA
(data supplied on )
which reports it as a synonym (record
6DA394AF-461B-426A-9310-B99413CF1157) with original publication details: "R. de Visiani, J. Pančić in Mem. Reale Ist. Veneto Sci. 15. 1870" 6 1870.
This name record (from TICA) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Lactucopsis altissima in version 1 of The Plant List.