Bird's-foot Trefoil

It is a perennial herbaceous plant, similar in appearance to some clovers. The flowers develop into small pea-like pods or legumes. The name 'bird's foot' refers to the appearance of the seed pods on their stalk. There are five leaflets, but with the central three held conspicuously above the others, hence the use of the name trefoil.
It is used in agriculture as a forage plant, grown for pasture, hay, and silage. Taller growing cultivars have been developed for this. It may be used as an alternative to alfalfa in poor soils.