Common Barberry, Berberis vulgaris

We have a slight warm-up here in Calgary today, It's -20C with a windchill of -27C. Sure beats the windchill of -42C that we had the other day! Wanted to brighten things up a little and thought this image would do the trick. I'm fairly certain that I have the correct ID, but would appreciate any correction or confirmation - thanks.

This perennial shrub was introduced from Europe and Asia as an ornamental. The red clusters of berries are attractive, with individual berries being 1cm long, with 1-3 black seeds per berry. It is in the Category: Prohibited Noxious. I think I've only seen it in three places - The Reader Rock Garden, Calgary Zoo, and one plant growing wild at Griffith Woods. This photo was taken on 10 September 2013 at the Reader Rock Garden.