Shrub 0,5-2 m high with very small leaves. The bark later splitting. On the upper part of the annual shoots, the leaves are trifoliate with petiole, on the downside, they are simple and without petiole. The flowers are symmetrical, rich yellow, located individually or 2 near leaves. Flowering in May and June. The fruit is flat legumes, which are in maturity black, shiny, at the seams with long hair. Shoots: Shoots are thin with 5 linear ribs. They are deep green to green-gray, sparsely hairy. Natural range: Western Europe; in our area introduced.