Angiosperms produce a wide array of leaves. These come in a vast array of sizes and shapes. Angiosperm leaves are Megaphylls. This means that they have more than vein in each leaf.
Palms produce the largest leaves.
They may also be the most complex in terms of their venation. Dicot Leaves are connected to the stem by Petioles . Many Monocots do not have petioles but have a distinct Sheath which connects the Blade to the Stem. There are two basic patterns of Venation. This is characterized by a network of veins which branch such that each branch becomes smaller and smaller.