dwarf Oregon-grape Berberidaceae Mahonia nervosa

Leaf:Alternate, pinnately compound (oddly), alternate, persistent; 10 to 18 inches long, 11 to 21 broadly lanceolate leaflets each 2 to 3 inches long. Leaflets are dark, glossy green above and paler green below; thick, waxy cuticles and spined teeth along their margins; lateral leaflets are opposite and sessile, while the terminal leaflet has a petiole; leaflets lack a distinct midrib.
Flower:Perfect, small bright yellow flowers are borne in long, upright racemes.
Fruit:Small (3/16 inch), dark blue berries, edible, but sour.
Twig:Unbranched; compound leaves emerge directly from main stem. Main stem is stout and brown; leaves are clustered at the terminal end. Lanceolate bud scales persist for several years.
Bark:Reddish brown, scaly and rough.
Form:A short, erect, unbranched evergreen shrub seldom over 3 feet fall.

leaf flower fruit twig form map