DENDROLOGY

Detailed explanation-1: -A leaf is said to be simple, when its lamina is entire or when incised, the incisions do not touch the midrib. When the incisions of the lamina reach up to the midrib breaking it into a number of leaflets, the leaf is called compound.

Detailed explanation-2: -Simple: A leaf which may be entire or incised to any depth, but not down to the midrib or petiole. Compound: A leaf made up of two or more leaflets, e.g., pea, and several other members of Leguminosae.

Detailed explanation-3: -Simple leaves have a single leaf blade and a shallow incision that does not divide the leaf blade, whereas compound leaves have a deep incision that divides the leaf blades into leaflets. The type of tree species can also be determined by looking at the leaves.