the midrib
Midrib
The veins on the leaves of dicot plants branch out pinnately or palmately. Pinnate has a central vein called midrib where the small veins are attached.
Venation is how a the leaf veins are organized. Netted venation is when there are larger veins with many smaller veins branches making a type of web pattern.
Capillaries are smaller, thinner and have less surface area than veins. Veins take blood to the heart, and capillaries are the thin tubes that connect the veins and arteries together.
In parallel venation, the veins are all smaller in size and parallel or nearly parallel to one another, although a series of smaller veins connects the large veins. Parallel venation occurs in the leaves of nearly all monocotyledonous Angiosperms, whose embryos have one cotyledon, as in flowering plants such as lillies and grasses
The patten of veins on a dicot leaf are called netted veins. With netted veins, several main veins begin near the base of the leaf and radiate outward.
The Veins in the leaf
The network of veins is the leaf skeleton
leaf vessels
in veins
The fine network of lines on the undersurface of a leaf are called Veins. The water and minerals go to every part of the leaf through these Veins.
The spaces between leaf veins are called areoles or areolae.