Sunflower is a member of the Asteraceae or Compositae family of plants.
Sunflower disc florets have two fused carpels and five stamens.
The sunflower is a composite flower.
Florets are a type of flower that consists of hundreds of blossoms.
Five petals make up each individual floret.
The core florets, known as disc florets, have standard petal lengths that are all identical in length, but the florets along the rim, known as ray florets, have one longer petal out of five.