Calyx: The green covering formed out of the sepals.
Calyx lobes: Sepals
Corolla: The tube of petals
Corolla lobes: Petals
Pedicel: Stalk of the flower
Bract: Any modified leaf, or scale, on a flower stalk or at the base of a flower
Tepal: a structure that cannot be distinguished as a sepal or a petal (as in lillies and tulips)