Poison ivy has a compound leaf made up of 3 leaflets which can be 1 to 4 inches long. The middle leaflet is the only one with a long stalk. Courtesy Johnson County Extension Just the mention of the ...

Plants that produce bi-pinnately compound leaves, such as this leaf of Guam's Serianthes nelsonii tree, are able to modify various traits of the intricate leaf design in order to maximize exploitation ...