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.
The petiole is a small but incredibly important part of plants that have them (known as petiolate plants). The petiole is the region of a leaf that connects the leaf blade to the stem. The petiole is a critical structure for maintaining chemical and nutrient flow within the plant and plays a key role in deciduous plants dropping of their leaves.