helianthus laetiflorus helianthus giganteus • helianthus maximilianii · · · Info · Definitions · Synonyms · Characters · · helianthus laetiflorus · · Text Common · · Latin · · Scripts 22 · · Length 8 · · Syllables Definitions · · · (noun) tall rough-leaved perennial with a few large flower heads; central United States. Synonyms: showy sunflower, Helianthus laetiflorus. · · Noun Definition 1 Synonyms · · · showy sunflower · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E 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