Stipa columbiana var. nelsonii (Scribner) H. St.John nom. illeg.

Stipa columbiana var. nelsonii (Scribner) H. St.John nom. illeg. is a synonym sensu Peterson et al., 2019a of:

Eriocoma nelsonii (Scribner) Romaschenko subsp. nelsonii, an accepted subspecies name sensu Peterson et al., 2019a.