The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves the leaf stalk may be long (as in the leaves of celery and rhubarb), or short (for example basil). When completely absent, the blade attaches directly to the stem and is said to be sessile.

Leaves are composed of a blade and, sometimes, a petiole. They can be simple or compound. Some plants have paired appendages at the base of the leaf called stipules.

Dec 17, 2016 · The petiole is the stalk that supports a leaf in a plant and attaches it to the stem. Many people often call it a stem, which is incorrect. A stem is the part of the plant that serves as the main source of support and produces nodes and roots, and that’s not what we observe in …

Feb 2, 2023 · A typical leaf shows three main parts: 1) petiole, 2) leaf base, and 3) leaf blade or lamina, each performing specific functions. 1. Petiole. It is the stalk that connects a leaf to the stem of the plant, it is made of complex conducting tissues called vascular tissues. Functions. 2. …

Leaf base has two small leaf-like structure called stipules. In plants like paddy, wheat, and other monocotyledons, this leaf base is wide and masks the stem. Petiole: Petiole is the long, thin, stalk that links the leaf blade to the stem.

Nov 26, 2024 · Although petioles are narrow and often resemble stems, they are considered part of the leaf. A petiolate leaf thus consists of the blade and the petiole. Petioles usually attach at to the margin (edge) of the blade along the base, but in peltate leaves, the petiole is attached underneath the blade (Figure \(\PageIndex{3}\)).

Petiole is the leaf stalk that pushes the lamina to secure proper sunlight. Leaves with petiole are known as petiolate, while those without petiole are called sessile (e.g., rice, wheat etc.). The petiole may be hollow (in papaya); winged (in citrus); teadrillax (in Nepenthus, Clematis); spongy (in Eichornia, Trapa).

For plant identification purposes, the shape of the leaf margin, leaf tip, and leaf base are key features to note. Remember, a leaf begins at the lateral or auxiliary bud.

Petiole : Petiole connects the lamina with the stem or the branch. A leaf is said to be petiolate when it has a petiole. It is said to be sessile when the leaf does not have a petiole.

The base of a leaf is the lower part of the lamina, where it is attached to the petiole or stem. Cuneate bases are sharp-pointed, with an angle less than 45 degrees between opposite sides which form a wedge or triangular shape that tapers to a narrow region at the point of attachment of lamina with petiole.