Coptis trifolia
(Goldthread)
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Facts About this Plant:
- Common Names: Goldthread, Three-leaf Goldthread, Savoyane, Canker Root, Goldenroot, Yellow Snakeroot
- Synonyms: Coptis groenlandica
- Lifespan: Perennial
- Zones: 2 - 6
- Type: Forb
- Bloom Time: April - July
- Status: Native
Coptis trifolia, or Goldthread, is native to only the northeastern quarter of the United States. It grows in moist open woods, and bogs, and grows in humusy, cool, acidic soil. It blooms in mid to late spring, with small flowers that have golden petals, and what look like white petals on this plant, are actually sepals. The roots of the plant are orange.
There are only four species in this genus, and Coptis trifolia is the only one in the eastern US. The rest are in the west, and so it is fairly easily distinguished in this way, just by its distribution, but it is also the only species that has white petal-like sepals; the rest of the species have green to yellow petals.
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