Japanese Barberry
Classification:
Family: Berberidaceae, barberry family
Genus species: Berberis thunbergii
Leaves:
Leaves are small, oval, 1 to 2 inches long, 1 inch wide
Fruit:
Fruit is an oblong red berry, ripens in late summer or autumn
Twigs:
Twigs have sharp thorns
Range:
Native to Japan and eastern Asia. Widely naturalized in North America, grown as an ornamental plant. Recently recognized as an invasive species in eastern North America.