Look up wild lettuce in Wiktionary, the free dictionary.

Wild lettuce is a common name for several lactucarium-containing plants related to lettuce (Lactuca sativa). The name most often refers to Lactuca virosa (Europe, Asia, introduced to North America), though it may also refer to:

• Lactuca canadensis (North America)
• Lactuca ludoviciana (NW America)
• Lactuca serriola (Southern Europe)
• Lactuca quercina (Eurasia)
• Lactuca floridana (North America)