corolla - (botany) the whorl of petals of a flower that collectively form an internal floral envelope or layer in the perianth; "we cultivate the flower for its corolla" Its form is of the lotos bud, and the lengthy fissures that plough a mountain aspect at the moment are http://keyscbdoil.get-blogging.com/8931480/indicators-on-petal-you-should-know