Vegetative (Perianth)

Vegetative (Perianth)

Main articles: Perianth, Sepal and Corolla (flower)

Collectively the calyx and corolla form the perianth (see diagram).

• Calyx: the outermost whorl consisting of units called sepals; these are typically green and enclose the rest of the flower in the bud stage, however, they can be absent or prominent and petal-like in some species.
• Corolla: the next whorl toward the apex, composed of units called petals, which are typically thin, soft and colored to attract animals that help the process of pollination.