This name is a synonym of Lactuca acanthifolia (Willd.) Boiss..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 67F71CD6-AD1B-4562-B1B7-D3356A165CDB) with original publication details: 330 1811.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:192853-1.
This name was in version 1 of The Plant List, record gcc-125512.