a. (Bot.) Being between petioles. Cf. Intrapetiolar. [ 1913 Webster ]

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. [ 1913 Webster ]

{ } a. [ Cf. F. pétiolarie. ] (Bot.) Of or pertaining to petiole, or proceeding from it; as, a petiolar tendril; growing or supported upon a petiole; as, a petiolar gland; a petiolar bud. [ 1913 Webster ]

a. (Bot.) Concealed within the base of the petiole, as the leaf buds of the plane tree. [ 1913 Webster ]