Woodsia oregana var. lyallii (Hooker) B. Boivin

Woodsia oregana var. lyallii (Hooker) B. Boivin is a synonym sensu FNA Ed. Comm., 1993 of:

Physematium scopulinum (D.C. Eaton) Trevisan subsp. scopulinum, an accepted subspecies name sensu Lu et al., 2019.