Japanese barberry

It is May 14th, 8:25am and about 45 degrees fahrenheit. There is 0% cloud coverage with a light breeze. The ground is dry and we are surrounded by granite slabs. It's sunny but there is shade under the pine trees. We are near a paved pathway in a small groove. There is sparse grass coverage and pine needles on the ground. We are near Storer St. and can hear cars passing by. We are looking at a Berberis thunbergii's and we have noticed that the leaves they produce are rounded leaf points. They have smooth edges and a simple shape. The woody sprigs have alternating leafs and small red berries. There are white flower buds near the leaves. The bush is about 1-2 meters, thorns 1/2 cm, berries 1-2cm and leaves about 1-2.5 cm.