Slideshow and species account to come.
For more information:
https://gobotany.nativeplanttrust.org/species/lactuca/serriola/?pile=composites
http://www.florafinder.com/Species/Lactuca_serriola.php
https://www.illinoiswildflowers.info/weeds/plants/prickly_lettuce.htm
https://en.wikipedia.org/wiki/Lactuca_serriola
