Yellow trefoil is a beautiful flower that belongs to the legume family. This flower is also known as yellow clover and hop trefoil. Its scientific name is Trifolium aureum. The yellow trefoil is a small herbaceous perennial plant that is native to Europe and Asia. This flower is characterized by its yellow colored petals and three-lobed leaves which are folded together at night. Some other synonyms for yellow trefoil are golden clover, yellow hop, and golden trefoil. This flower is commonly found in meadows, pastures, and fields. It is also used as a fodder crop for livestock due to its high protein content.