Hieracium umbellatum subsp. canadense (Michaux) G.A. Guppy

Hieracium umbellatum subsp. canadense (Michaux) G.A. Guppy is a synonym sensu FNA Ed. Comm., 2006a of:

Hieracium umbellatum Linnaeus, an accepted species name sensu FNA Ed. Comm., 2006a.