Spinulum subarcticum (V.N. Vassiljev) ) A. Haines
Spinulum subarcticum (V.N. Vassiljev) ) A. Haines is a synonym sensu Hassler, 2014-2024+ of:
Spinulum annotinum subsp. alpestre (Hartman) Uotila, an accepted subspecies name sensu Kurtto, A. & P. Uotila, 2019.