intrapetiolar

from The Century Dictionary.

• In botany:
• Situated within or interior to a petiole: applied to a pair of stipules which unite by the margins that are nearest to the petiole, and thus seem to form a single stipule between the petiole and the stem or branch.
• Inclosed by the expanded base of the petiole: applied to buds formed in the fall immediately under the base of the petiole of leaves of the previous summer, into a cavity of which they project and are not exposed until the fall of the leaf, as in Platanus, Rhus, etc. It is often confounded with interpetiolar.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Bot.) Situated between the petiole and the stem; -- said of the pair of stipules at the base of a petiole when united by those margins next the petiole, thus seeming to form a single stipule between the petiole and the stem or branch; -- often confounded with interpetiolar, from which it differs essentially in meaning.

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

• adjective botany Situated between the petiole and the stem; said of the pair of stipules at the base of a petiole when united by those margins next to the petiole, thus seeming to form a single stipule between the petiole and the stem or branch.