pseudopetiole

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun botany The petiole of some monocotyledon leaves which is not part of the lower leaf zone.
• noun botany A petiole-like constriction of the lamina or similar organ (such as a phyllode or phylloclade).
• noun botany The morphologically distinct proximal section of a petiole to which stipules are attached.