Poison Ivy With 5 Leaves. Poison ivy leaves are pointed at the tip. Poison oak looks similar, but the leaves are.
This is rather big news for poison ivy science, and we don't yet know what it means. This vine is exactly what was in my yard and up the side of the house. Poison ivy is the only one that always has three leaves, one on each side and one in the center.
The leaves of this plant look a lot like oak leaves, and like poison ivy, they usually grow in clusters of three.
Poison ivy rash is a type of allergic contact dermatitis caused by an oily resin called urushiol.
The edges of the solid green leaves, while reminiscent of an oak tree, are less dramatic. I always heard it was a tri-leaf and shiny. Even poison ivy and poison oak may have more than three leaves and their form may vary greatly depending upon the exact species encountered, the local environment, and the season.