What is the term for the "stalk" of a leaf?

The term for the "stalk" of a leaf is known as the petiole. The petiole serves as the connection between the leaf blade and the stem of the plant, allowing for the transport of nutrients and water from the stem to the leaf. In addition to its structural role, the petiole can also support the leaf blade, positioning it appropriately to capture sunlight for photosynthesis.

The blade refers specifically to the expanded, flat part of the leaf that is typically responsible for photosynthesis. Leaflets are individual segments that can compose a compound leaf, while the stem refers to the main structural axis of the plant that supports leaves and flowers. Understanding these terms is essential for identifying different plant structures and their functions in botanical studies or practical arboriculture.