Prophyll is a term used in botany that refers to the small leaves or bracts located at the base of a branching stem or in between the stem and the leaf. There are several synonyms to the word prophyll that are often used in botany. Some of these synonyms include scale, sheath, cataphyll, bracteole, and microphyll. Scale refers to the small, flattened leaves that cover the stem, while sheath describes the tubular structure that encloses the stem. Cataphyll refers to the modified leaves found at the base of a bud, while bracteole describes small, modified leaves that surround the flowers. Lastly, microphyll refers to a small, simple leaf that lacks a petiole.