This name is a synonym of Sonchus asper (L.) Hill.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record ED15B434-AA13-41B3-AC0A-5A5C3AC6A2AD) with original publication details: 86 1779.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:250352-1.
This name was in version 1 of The Plant List, record gcc-48775.