| coptis | (n) small genus of low perennial herbs having yellow rhizomes and white or yellow flowers, Syn. genus Coptis |
| petrocoptis | (n) perennial tussock-forming rock plants; of Pyrenees and mountains of northern Spain; similar to and sometimes placed in genus Lychnis, Syn. genus Petrocoptis |
| goldthread | (n) low-growing perennial of North America woodlands having trifoliate leaves and yellow rootstock and white flowers, Syn. Coptis groenlandica, golden thread, Coptis trifolia groenlandica |
| Coptis | n. small genus of low perennial herbs having yellow rhizomes and white or yellow flowers. |
| Petrocoptis | prop. n. A genus of perennial tussock-forming rock plants; native to the Pyrenees and mountains of Northern Spain; it is similar to and sometimes placed in the genus |