Circaea quadrisulcata var. canadensis (Linnaeus) H. Hara

Circaea quadrisulcata var. canadensis (Linnaeus) H. Hara is a synonym sensu FNA Ed. Comm., 2021 of:

Circaea canadensis (Linnaeus) Hill subsp. canadensis, an accepted subspecies name sensu FNA Ed. Comm., 2021.