Grass, part of is a term that can refer to two different parts of grass. The first part is the AWN, which is a bristle-like appendage that grows from the lemma and palea of the grass spikelet. The AWN is a stiff hair-like structure that helps the grass seed disperse in the wind. The second part is the palea, which is a thin, membranous bract that encloses the grass floret. The palea helps protect the grass floret from environmental damage and also helps the grass seed disperse in the wind.