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 27F06B8D-D409-4EF2-BF86-CC4CEDB87608) with original publication details: 15 1924.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:250100-1.
This name was in version 1 of The Plant List, record gcc-122571.