Oxytropis maydelliana subsp. melanocephala (Hooker) A. E. Porsild

Oxytropis maydelliana subsp. melanocephala (Hooker) A. E. Porsild is a synonym sensu FNA Ed. Comm., in prep. c of:

Oxytropis maydelliana Trautvetter, an accepted species name sensu FNA Ed. Comm., in prep. c.