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3,627 sunflowers, daisies, asters, and allies species
Leibnitzia lyrata
Leibnitzia anandria
Acanthospermum hispidum
Achillea ligustica
Acourtia nana
Adenophyllum porophyllum
Adenophyllum wrightii
Ageratina paupercula
Ageratina riparia
Ageratina rothrockii
Ageratina wrightii
Ageratum corymbosum
Ageratum littorale
Amberboa moschata
Ambrosia cheiranthifolia
Ambrosia cordifolia
Ambrosia deltoidea
Ambrosia linearis
Ambrosia tomentosa
Antennaria rosulata
Antennaria soliceps
Antennaria virginica
Aphanostephus ramosissimus
Aphanostephus riddellii
Arctotis stoechadifolia
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