Synonyms
Physematium scopulinum Trevis.
Woodsia obtusa var. lyallii Hook.
Woodsia obtusa var. nana Lemmon ex Gilbert
Woodsia obtusa f. nana (Lemmon ex Gilbert) Clute
Woodsia oregana var. lyallii (Hook.) B.Boivin
Woodsia scopulina f. nana (Lemmon) M.Broun