Part of a complete flower, consisting of petals, immediately enveloping organs of fertilization and is usually colored.
the petals of a flower collectively forming an inner floral envelope or layer of the perianth
(botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth; "we cultivate the flower for its corolla"
(botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth
