I have this plant in a flower bed I've been working in. I'm not positive, but I think it may be poisonous. I'm breaking out and itching terribly. But it doesn't look like poison oak, ivy or sumac from the pictures I've seen. It's pretty woody, with roots/stems about half inch or more. No flowers. Starts out small, and then spreads. This one here is about a foot or so tall. Any ideas???