Native to (or naturalized in) Oregon:
- Evergreen shrub, 6-12 ft (1.8-3.7 m), very erect, may be single or multistemmed, stems little branched. Leaves alternate, pinnately compound, clustered near stem ends and held horizontal, very long, each is 40-60 cm long, with 10-18 pairs of leaflets which are thick, spiny, glossy green, and about 7.5 x 2 cm. Flowers small, bright yellow, appear in winter and are borne in long (10-20 cm), upright, cylindrical clusters just above the upper most leaves. Fruit is a powder blue.
- Part shade, especially in the afternoon, moist, well drained soil. May need protection from cold in much of the Pacific Northwest. Used as a specimen plant.
- Hardy to USDA Zone (7) 8 Native to Burma (Myanmar), western China and Taiwan.
- Mahonia: after Bernard McMahon (born 1816), American nurseryman. lomariifolia: with leaves like Lomaria, now Blechnum.
- Oregon State Univ., campus: at the 11th Street Gate on Campus Way