a corolla is a form of:

Corolla



noun
1.
(a ring of petals forming the inner envelope, of a flower) កន្សោមផ្កា, ត្របកផ្កា
ENGLISH MEANING
noun
1.
The inner envelope of a flower; the part which surrounds the organs of fructification, consisting of one or more leaves, called petals. It is usually distinguished from the calyx by the fineness of its texture and the gayness of its colors.