Winter annual or biennial; 0.3-1.5m tall. Leaves pinnately lobed or entire; 5-30cm long; margins and ventral midrib are prickly. Flowers yellow, born numerous along a flowering stalk; cylindrical, broader at the base. Edible when immature.
Knoke, Don, and David Giblin. 2017. WTU Herbarium Image Collection - Burke Museum. University of Washington. Accessed 8 June 2017. http://biology.burke.washington.edu/herbarium/imagecollection.php?Genus=Lactuca&Species=serriola
|Fields, waste areas, disurbed rangelands across North America.||Full sun||Yes|