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Homer Edward Price   cc-by

Helianthus giganteus (giant sunflower) is a herbaceous species of plants in the family Asteraceae, with a self-supporting growth habit. It has simple, broad leaves. Flowers are visited by Andrena aliciae Robertson 1891, Sunflower Andrena, Halictus ligatus Say 1837, and Andrena aliciae Robertson 1891. It is a photoautotroph.

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EOL has data for 16 attributes, including:

Known occurrences, collected specimens and observations of giant sunflower