Coptis groenlandica, commonly known as Greenland goldthread or yellowroot, is a plant species native to North America. It is a small herbaceous perennial plant that grows in moist, shady areas such as bogs, wet meadows, and forests. Its unique bright yellow root has been used for centuries by indigenous peoples for medicinal purposes, specifically as a natural remedy for digestive and respiratory ailments. Synonyms for Coptis groenlandica include yellow root, golden thread, Coptis trifolia, and Ranunculus groenlandicus. These names are often used interchangeably and typically refer to the plant's bright yellow root, which is prized for its medicinal properties.