Marsh trefoil, also known as Lotus pedunculatus, has several synonyms that are commonly used in the botanical world. Some of these synonyms include bird's-foot trefoil, bird's-claw trefoil, common bird's-foot trefoil, lotus bird-foot, and big trefoil. These synonyms are used to describe the same perennial leguminous plant that grows in marshy areas, along riverbanks, and in fields throughout Europe and North America. The plant is characterized by its clover-like leaves and yellow flowers, which bloom from May to September. While known by many names, the marsh trefoil remains an important plant species that provides food and habitat for various wildlife, including bees, butterflies, and birds.