Is this poison oak, or ivy, or sumac?

I am extremely allergic to something and just found this growing in the ivy outside my porch, can you please tell me if this is something to worry about?

 

Looks like Parthenocissus quinquefolia, Virginia creeper to me.

 

Parthenocissus quinquefolia

 

Harry Homeowner & Tyrlych,

Thanks for your quick reply. I am at ease, what a freak-out I had! It does make sense, as they have 5 leafs and are often mistaken! Much appreciation for the heads up.

 

Is there any other plant growing nearby which might account for your allergic reaction?

 

For future reference have a look at this excellent site.

http://grandpacliff.com/Plants/PoisonIvy.htm

 

:Togata57:

There very well could be something where I live and work. As I walk 5-10 miles a day outdoors as a meter reader, I could be trooping through anything or petting an animal with it on them. Yikes! I may have to find another job.

:Silver surfer:

Thanks! What a cool site to notice those ivy trees and different seasonal stages. Very informative indeed. :)