1) Coptis groenlandica 2) Coptis trifolia groenlandica 3) Golden thread 4) Herb 5) Herbaceous plant 
[n] - low-growing perennial of North America woodlands having trifoliate leaves and yellow rootstock and white flowers
a white-flowered plant, Coptis trifolia, of the buttercup family, having a slender, yellow root that is sometimes used as a tonic.