epidermis is the outermost covering of the leaf
it is the outer most layer of the leave and so covers the leave surface except at the stomata
Adventitia is a 10 letter word for outermost covering of an organ.
sclera
It is the integumentary system, or skin.
The leaf margin is the outermost boundry line of the leaf lamena. It determines the shape of the leaf.
The outermost layer of the skin is called the epidermis.
cortex
The Veins
membrane or plasma membrane.
cuticle
The outermost layer of a root is called the epidermis. It is a single layer of cells that protects and covers the root. In stems and leaves, the outermost layer is also called the epidermis, and it serves a similar protective function.
cuticle it on the leaf for the bugs to eat to keep out posion