Petiole (botany)
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In botany, the petiole, commonly known as the leaf stem or leaf stalk, is the stalk that attaches the leaf to the twigs, branches or stems of a plant. The terms petiolate and apetiolate are applied, r
Leaf of Pyrus calleryana with petiole
Harvested rhubarb petioles with leaf blades attached
Acacia koa with phyllode between the branch and the compound leaves
Pulvini at both ends of the petioles of Elaeocarpus multiflorus
Sessility (botany)
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In botany, sessility is a characteristic of plant organs such as flowers or leaves that have no stalk. Plant parts can also be described as subsessile, that is, not completely sessile.
Petiole (botany)
…long (as in the leaves of celery and rhubarb) or short (e.g. basil). When completely absent, the blade attaches directly to the stem and is said to be sessile or apetiolate. Subpetiolate leaves have an extremely short petiole and may appear sessile. The broomrape family, Orobanchaceae, is an example of a taxon…
The perennial wildflower Trillium cernuum possesses three leaves that are sessile at the top of the stem.