American goldthread
Coptis trifolia
Synonyms: Chryza borealis, Coptis groenlandica, Coptis trifolia f. semiplena, Coptis trifolia f. plena, Coptis trifolia var. semiplena, Coptis daisetsuensis, Anemone groenlandica, Isopyrum trifolium, Helleborus trifoliatus, Coptis trifolia var. groenlandica, Coptis trifolia subsp. groenlandica, Helleborus pumilus, Helleborus trilobus
Western Herbalism Properties
Gallery
Botanical Description
Coptis trifolia, American goldthread, is a low, evergreen perennial herb in the family Ranunculaceae, circumboreal in distribution, occurring across cool, mossy, coniferous and mixed forests of North America, Greenland and eastern Asia, especially on acid, humus-rich soils and along the margins of bogs. It is named for its bright yellow, thread-like creeping rhizome, from which arise long-stalked, three-parted basal leaves with glossy, broadly fan-shaped, sharply toothed leaflets reminiscent of strawberry foliage. A slender leafless scape 5-15 cm tall bears a single small star-shaped flower in late spring, with five to seven white petaloid sepals, narrow club-shaped yellow petals that act as nectaries, and many stamens. Several beaked follicles spread in a star pattern at maturity. The plant forms dense, slowly spreading colonies on the forest floor.
Cultural & Historical Context
Traditional American Uses
The yellow rhizome of goldthread is among the most widely used oral remedies in northeastern Native American materia medica. Iroquois, Mohegan, Penobscot, Micmac, Malecite, Abnaki, Algonquin, Ojibwa, Menominee, Chippewa and Potawatomi people chewed the fresh root or used decoctions of it as a wash and gargle for sore mouths, canker sores, thrush in infants, sore throat, and toothache, the action attributed to the intensely bitter alkaloid berberine. The same decoction was taken internally as a bitter tonic for stomach complaints, indigestion, and 'general debility,' and applied to sore eyes and to skin sores; the bright yellow root also yielded a dye (Smith, 1923; Herrick, 1977; Speck, 1917; Densmore, 1928).
Chemistry & External Identifiers
Important Disclaimer
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.