Definition that contains wild lettuce
- lactuca serriola European annual wild lettuce having prickly stems; a troublesome weed in parts of United States
- prickly lettuce European annual wild lettuce having prickly stems; a troublesome weed in parts of United States
- horse thistle European annual wild lettuce having prickly stems; a troublesome weed in parts of United States
- lactuca scariola European annual wild lettuce having prickly stems; a troublesome weed in parts of United States