Trisetum spicatum subsp. alaskanum (Nash) Hultén
Trisetum spicatum subsp. alaskanum (Nash) Hultén is a synonym sensu FNA Ed. Comm., 2007 of:
Koeleria spicata (Linnaeus) Barberá, Quintanar, Soreng & P.M. Peterson, an accepted species name sensu Barberá et al., 2019b.