What is the term for the collective group of bracts that subtend an inflorescence in Asteraceae?

The term for the collective group of bracts that subtend an inflorescence in the Asteraceae family is "involucre." In this context, the involucre plays an essential role in supporting the flower cluster and protecting the developing flowers.

In Asteraceae, which includes plants like sunflowers and daisies, the involucre is often noticeable and can vary in shape and size, contributing to the overall appearance of the inflorescence. It encompasses the head of flowers, providing structural integrity and sometimes adding to the visual appeal of the bloom.

The other terms mentioned refer to different components of flowers or inflorescences. The corolla refers to the petals of a flower, the floret is a small single flower found within an inflorescence, and the pappus is a modified structure that plays a role in seed dispersal, often seen as feathery structures on the seeds of some Asteraceae. These terms, while relevant in botany, do not describe the group of bracts that form the involucre.