Solidago simplex subsp. randii var. gillmanii (A. Gray) G.S. Ringius
Solidago simplex subsp. randii var. gillmanii (A. Gray) G.S. Ringius is a synonym sensu Semple & Peirson, 2013 of:
Solidago gillmanii (A. Gray) Steele, an accepted species name sensu Semple & Peirson, 2013.