Berberis × mentorensis
Native to (or naturalized in) Oregon:
- Evergreen shrub, semi-deciduous in cold climates, upright, stiff, bushy with age, 5-7 ft (1.5-2.1 m) tall and as wide or wider. Stems have 3-parted spines (thorns). Leaves alternate, simple, elliptic-ovate, 2.5-5 cm long, some spines toward apex, dark green above and paler below, may be yellow-orange to red in fall. Flowers small, yellow, appear in spring. Fruit is dark red but usually absent.
- Sun or partial shade.
- Hardy to USDA Zone 5 A hybrid of B. julianae and B. thunbergii.
- Oregon State Univ. campus: west side of Bexell Hall.