„Silybum marianum 2003-04-07“ von Copyright by Curtis Clark, licensed as noted – Photography by Curtis Clark. Lizenziert unter CC BY-SA 2.5 über Wikimedia Commons – https://commons.wikimedia.org/wiki/File:Silybum_marianum_2003-04-07.jpg#/media/File:Silybum_marianum_2003-04-07.jpg