(Berberis wilcoxii)
Berberis wilcoxii is a shrub native to Arizona, New Mexico and Sonora. It is up to 2 m tall, with pinnately compound leaves of 5-7 leaflets, densely clustered racemes and ovoid berries up to 10 mm long. It is generally found in rocky canyons in mountainous areas at an elevation of 1700–2500 m.