Poison Ivy Leaves. Some leaves may resemble oak leaves. The middle leaflet is longer than the other two, and the leaflets are.
Its leaves are somewhat larger than poison ivy leaves, although, similarly, poison oak displays an alternating three-leaf pattern. They're shiny with smooth or slightly notched edges. With characteristic triads of leaves, it seems like it should be easy to identify poison ivy.
Find out if poison ivy is contagious, and learn when to seek medical care for a poison ivy rash.
They include Poison ivy's "leaves of three" are glossy-green, but are tinged with pink in the spring, and take on a brilliant orange in the autumn.
Poison ivy, poison oak, and poison sumac belong to the cashew family. Some leaves may resemble oak leaves. Poison ivy has several characteristic signs, according to About.com's Poison Ivy Treatment Guide.