petiolar
/ˈpɛtiələr/
adjective
- Relating to or located on the petiole (the stalk that attaches a leaf to a stem).
- The petiolar region of the leaf is often green and slightly thicker than the blade.
- Aphids tend to cluster near the petiolar junction where the leaf meets the stem.
- Botanists examined the petiolar hairs under a microscope to identify the plant species.