What role do lodicules play during grass flowering?

In the context of the Poaceae family, lodicules are small, translucent, scale-like structures located at the base of the ovary, typically numbering two or three.12

During the flowering process, lodicules play a critical role in anthesis by swelling rapidly. This expansion exerts pressure that forces apart the lemma and palea, the protective scales surrounding the flower. By opening the floret, the lodicules allow for the exsertion of the anthers and stigmas, which is essential for cross-pollination. Once pollination has occurred, the lodicules shrink, allowing the floret to close and protect the developing fruit.12