Veins are distributed either in a netlike or parallel formation. Narrow and needle leaves typically have a parallel vein structure with a main vein or veins extending from each leaf's base to its tip. Leaves of broad-leaf plants have one of two types of netlike veins. A pinnate leaf, for example, has a dominant, central vein with other vessels branching to the vein's sides. A palmate leaf, however, has several large veins originating from the leaf's base.