Hieracium rigorosum (Laestadius) Almquist
Hieracium rigorosum (Laestadius) Almquist is a synonym sensu FNA Ed. Comm., 2006a of:
Hieracium umbellatum Linnaeus, an accepted species name sensu FNA Ed. Comm., 2006a.
Hieracium rigorosum (Laestadius) Almquist is a synonym sensu FNA Ed. Comm., 2006a of:
Hieracium umbellatum Linnaeus, an accepted species name sensu FNA Ed. Comm., 2006a.