This is a hairless biennial which flowers from June to September on waste ground, railway banks and grassland. It has spikes of pretty bright yellow peaflowers, each 4-7mm long, with the wing petals and standard, longer than the keel. The leaves are trefoil having oblong, toothed leaflets. The seedpods are brown, wrinkled and hairless. This plant has been introduced into Ireland and belongs to the family Fabaceae.
I first saw this plant in Killiney, Co Dublin in 1977 and photographed it on the West Pier, Dun Laoghaire, Co Dublin in 2007
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre