Definition: Cassidae is a family of flowering plants in the family Asteraceae. They are commonly known as "cassicolous" or "cassicolous plants." These plants have leaves that are typically larger than those of other species, which can be described as having "cassicolous leaves," and often come from clusters of many small flowers arranged in a single stalk. The family Cassidae is considered to be one of the most diverse families of flowering plants due to their