Kingcup, which is also known as marsh marigold, has a number of synonyms. Some of the common synonyms include cowslip, water dragon, May blob, bullflower, and meadow bright. These terms are used interchangeably to refer to the same species of flowering plants belonging to the genus Caltha. Kingcups are known for their bright, yellow flowers which bloom in the spring and early summer. They are native to wetlands, bogs, and fens in Europe and North America. The plants are valued for their ornamental purposes, as well as their medicinal properties. Regardless of the name used, kingcups always hold a special place in folk tales, myths, and legends.