Coptis trifolia

Coptis trifolia (L.) Salisb.
Engl.: American goldthread, canker-root, goldthread, mouthroot, threeleaf goldthread, vegetable gold, yellowroot.
Deu.: Gelbe Niesswurz, Kleinste Niesswurz.
Sven.: polarkoptis, arktisk koptis.
Bot. syn.: Anemone groenlandica Oeder, Coptis groenlandica (Oeder) Fern., Helleborus trifolius L.