Gender: Female. Usage: Morella is not a popular first name. It is more often used as a girl (female) name. People having the name Morella are in general originating from Ireland, Italy, United States of America.
From Wikipedia, the free encyclopedia. A leaf scar is the mark left by a leaf after it falls off the twig. It marks the site where the petiole attached to the stem. A leaf scar is found where a plant branches. The leaf scar on Ailanthus altissima. Leaf scars are formed naturally at the end of the growing season for deciduous plants when a layer of cells called the absciss layer forms between the petiole and stem. The absciss layer acts as a point of cleavage and the leaf breaks off leaving a cleanly shaped scar.
NODE - point at which leaf stalk is attached to stem. PETIOLE - leaf stalk, extends from stem to leaf blade. PRIMARY VEINS - the most prominent veins of a leaf. SECONDARY VEINS - those veins which depart from the primary veins; they may or may not extend to the leaf margin. SINUS - angle or valley between two lobes; may be rounded or angular. STEM - main branch of plant.