What term refers to the edges of leaves?

The term that refers to the edges of leaves is "margins." In botanical terminology, leaf margins are the boundary lines that delineate the leaf’s outline, which can vary widely among different species. They can be smooth, serrated, lobed, or rolled, among other forms. Understanding leaf margins is important in plant identification and classification, as they often provide key characteristics that distinguish one species from another.

The other terms have specific meanings that relate to different parts of the leaf. The petiole refers to the stalk that connects the leaf blade to the stem, while veins are the vascular structures within the leaf that transport water and nutrients. Nodes are the points on a stem where leaves are attached. Recognizing the distinct definitions of these terms enhances comprehension of plant anatomy and morphology.