Sonchus parathalassius R. Jardim & M. Seq. in Silva Lusitana 19: 234. 2011 Sonchus parathalassius R. Jardim & M. Seq. in Silva Lusitana 19: 234. 2011Taxon for this nameSonchus parathalassius R. Jardim & M. Seq. in Silva Lusitana 19: 234. 2011