The Collaborative International Dictionary
Intrapetiolar
Intrapetiolar \In`tra*pet"i*o*lar\, a. (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.
Wiktionary
intrapetiolar
a. (context botany English) 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.