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 E4DA263D-EE88-45E3-BE2D-5BD4E20F0ABF) with original publication details: 794 1753.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:328750-2.
This name was in version 1 of The Plant List, record gcc-49547.