lactuca scariola lactuca sativa longifolia • lactuca serriola · · · Info · Definitions · Synonyms · Characters · · lactuca scariola · · Text Common · · Latin · · Scripts 16 · · Length 6 · · Syllables Definitions · · · (noun) European annual wild lettuce having prickly stems; a troublesome weed in parts of United States. Synonyms: prickly lettuce, horse thistle, Lactuca serriola, Lactuca scariola. · · Noun Definition 1 Synonyms · · · prickly lettuce · · Synonym 1 horse thistle · · Synonym 2 lactuca serriola · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075