Botrychium matricariifolium subsp. hesperium Maxon & R.T. Clausen

Botrychium matricariifolium subsp. hesperium Maxon & R.T. Clausen is a synonym sensu FNA Ed. Comm., 1993 of:

Botrychium hesperium (Maxon & R.T. Clausen) W.H. Wagner & Lellinger, an accepted species name sensu Farrar, 2008.