Lysimachia ciliatum is a herbaceous perennial plant that belongs to the primrose family. It is a distinctive plant that carries a variety of synonyms. Some of the popular synonyms of Lysimachia ciliatum include Fringed Loosestrife, Whorled Loosestrife, and Fern-leaved Loosestrife. Fern-leaved Loosestrife is so named because of its uniquely shaped foliage. The plant is also alternatively known as American Border False Pimpernel due to its native origin. Its stems are generally multi-branched with pretty yellow flowers, which bloom over the summer months. Other synonyms include Lysimachia paridiformis, which is similar to L. ciliatum in its appearance. Lysimachia ciliatum is a great addition to gardens and landscapes, providing a striking and unique aesthetic appeal.