== Liens ==
*[http://www.biodiversitylibrary.org/search.aspx?SearchTerm=Sonchus%20oleraceus&SearchCat= BHL]*[http://botanical.com/botanical/mgmh/s/sowthi71.html#com Grieve's herbal]
*[http://www.ars-grin.gov/cgi-bin/npgs/html/tax_search.pl?Sonchus%20oleraceus GRIN]
*[http://www.ipni.org/ipni/simplePlantNameSearch.do?find_wholeName=Sonchus%20oleraceus&output_format=normal&query_type=by_query&back_page=query_ipni.html IPNI]