What are the bristle-like structures that stick out of the lemma called?

The bristle-like structures that protrude from the lemma are known as awns. Awns serve several functions, including aiding in seed dispersal and protection of the seed. They can influence the way seeds are carried by wind or animals, enhancing the plant's ability to spread its progeny across a broader area. Awns can also help to stabilize the seed as it matures, preventing damage during harsh environmental conditions. In many grass species, these structures are characteristic features that contribute to their identification and classification. This understanding of awns is crucial for agronomy, particularly in the study of plant morphology and in breeding programs aimed at improving seed characteristics.