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The sun flower as a type of flowering plants by Anne B. Jewett, 1890

The Sun Flower as a Type of Flowering Plants by Anne B. Jewett, 1890, Page 64

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61. They are syngenesious, and are inserted on the top of the akene. As regards Fertilization; - Mūller says that Delpino found Helianthus fertilized chiefly by the little insect Heriades [truneorum?] which tapped the flowers in their first staminate stage, and dexteriously swept up the pollen that exuded from the anther-cylinder with its abdominal collecting-hairs; hence he concluded that the insect and the plant
 
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