A North American plant, Sanguinaria canadensis, of the poppy family, which has a red root and sap and a single white flower in early spring.
Common yarrow, Achillea millefolium, the type species of the genus.
The green woodpecker, Picus viridis.
Any of several pungent Eurasian and North American herbs, of the genus Achillea, used in traditional herbal medicine.