â¢ MORELLO (noun) The noun MORELLO has 2 senses: 1. any of several cultivated sour cherry trees bearing fruit with dark skin and juice. 2. cultivated sour cherry with dark-colored skin and juice. Familiarity information: MORELLO used as a noun is rare.
Petiole. In botany, the petiole is the stalk attaching the leaf blade to the stem. The petiole is the transition between the stem and the leaf blade, and usually has the same internal structure as the stem. Outgrowths appearing on each side of the petiole are called stipules.
In botany, leaf shape is a description of the form of the part of a plant known as the leaf. It is characterised with the following terms (with botanical Latin in italics in brackets) to describe the shape of leaves 1  : Acicular (acicularis): Slender and pointed, needle-like. 2  Acuminate (acuminata): Tapering to a long point. 3  Acute: Pointed, having a short sharp apex angled less than 90Â°.