Circaea canadensis
Circaea canadensis, known as eastern enchanter's nightshade, Canada enchanter's nightshade, broad-leaved enchanter's nightshade, is a perennial herbaceous plant found in forests of eastern North America. It is very similar to its sister species, Circaea lutetiana, and was formerly considered conspecific.
Taxonomy
Circaea canadensis was considered a variety of Circaea lutetiana by Carl Linnaeus in 1753. In 1765 the botanist John Hill published a description of it as a species creating its accepted name. It is classified in the genus Circaea within the Onagraceae family. According to Plants of the World Online it has two accepted subspeciesCircaea canadensis subsp. canadensisCircaea canadensis subsp. quadrisulcataIt has synonyms of the species or one of its subspecies.