When discussing tomato plants and cultivars leaf type is a term thrown around a lot of the time as well as other classifications. Most tomatoes fall in to two basic categories of leaves. Regular Leaf and Potato Leaf. While not an overly important factor in determining what kind of tomato to plant it is a useful piece of classification knowledge to know.
The most common type of leaf on tomatoes is the Regular Leaf. Regular Leaf tomato plants usually have several leafs grown from each stem with serrated, saw like edges. Size, color and texture can all be vary, the shape of the leaf is the main distinguishing factor.
Potato Leaf tomato plants have leaves that have fewer or no interruptions in their edge and our normally larger than regular leaves. Potato Leaf plants will sometimes have leaves with a few growth lobes, as seen above, and very little serration to the edges. Potato Leaf plants foliage is often stronger than its Regular Leaf counterpart.