Chinese barberry (Berberis chinensis) is an East Asian shrub with drooping clusters of yellow flowers and slim red berries. Its narrow, smooth-edged leaves help separate it from some other barberries in photographs.
Japanese barberry usually bears one to four flowers in a short group. This species has a longer, drooping cluster with many flowers.
Why they get mixed upBoth have small leaves, spines, yellow flowers, and red fruit.