Dwarf Oregon-grape

Photographed at Sehome Hill Arboretum in Bellingham, I believe the identification is correct, but the flowers, usually a clear bright yellow have as much red as yellow in this case, and they appear to be doubled, a very unusual example of this species if indeed the ID is correct.

ronaldhanko-orchidhunter.blogspot.com/2013/05/sehome-hill...