helianthus
noun
he·li·an·thus
-an(t)thəs
1
capitalized
: a genus of tall erect or sometimes much-branched American annual or perennial herbs (family Compositae) comprising the sunflowers and having flower heads with purple or yellow disk flowers and showy yellow sterile rays see jerusalem artichoke
2
plural -es
: any plant of the genus Helianthus
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Merriam-Webster unabridged
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