Sonchus palustris

Sonchus palustris

Sonchus palustris L.
Engl.: marsh sow-thistle.
Deu.: Sumpf-Gänsedistel.
Sven.: strandmolke, strandtistel.
Fran.: laiteron des marais.

I have no articles for this botanical term, but there might be some for the next level down (if found).