Poison ivy leaves are compound rather than simple – a single leaf is divided into three separate ... Another key identifying characteristic is that one side of a leaflet may have an irregularly ...

or staggered (alternate)—and note whether they are simple or compound. Leaf margins, or edges, can be classified as lobed, toothed, or entire. Maple and Oak trees, for example, have lobed leaves.

Simple-leaf trees like the sycamore have one ... Deeply lobed leaves, such as oak, have sharp protrusions with smooth edges. Toothed leaves, such as elm, look like the edges are serrated.