Petiole Posted on November 8, 2022August 1, 2023 by Tex Norwood The stalk that joins a leaf to a stem; leafstalk. Related Articles: Grafting and Budding OverviewPumeria and Frangipani CharacteristicsWater Uptake and Transport in Vascular PlantsGlossary: AxilGlossary: Leaf axil