Biscutella didyma

Biscutella didyma, commonly known as buckler mustard, is a species of annual herb in the family Brassicaceae. They have a self-supporting growth form and simple, broad leaves and dry fruit. Flowers are visited by nomad bees, syrphid flies, the hoverfly Chrysotoxum intermedium, and the fly Hebecnema fumosa. Individuals can grow to 4 cm.