INTRAPETIOLAR
Etymology
Adjective
intrapetiolar (not comparable)
(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.
Source: Wiktionary
In`tra*pet"i*o*lar, a. (Bot.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition