Mahonia repens (Oregon Grape)

Order Ranunculales, Family Berberidaceae, Genus Mahonia

Also called Holly Grape, this small shrub grows on sunny slopes along Lower Magnolia and along the Waterfall TRail. Its berries make good jelly. The community along the first switchback grows among Poison Ivy, so be careful! Wikipedia and Southwest Colorado Wildflowers have more information. Berberis repens is one of several synonyms.