Amabilis Fir, Cascade Fir, Lovely Fir, Pacific Silver Fir, Silver Fir: Abies amabilis -

California White Fir, Sierra White Fir: Abies concolor X Abies grandis (Synonyms: Abies concolor, Abies concolor var. concolor, Abies concolor var. lowiana, Abies lowiana) -

Grand Fir, Lowland Fir, Lowland White Fir, Stinking Fir: Abies grandis (Synonym: Pinus grandis) -

Alpine Fir, Balsam Fir, Subalpine Fir, White Balsam Fir: Abies lasiocarpa var. lasiocarpa (Synonym: Abies balsamea ssp. lasiocarpa, Abies balsamea var. fallax, Abies bifolia, Abies subalpina, Pinus lasiocarpa) -

California Red Fir, Shasta Red Fir: Abies magnifica X Abies procera (Synonyms: Abies magnifica, Abies magnifica var. magnifica, Abies magnifica var. shastensis, Abies Xshastensis) -

Noble Fir, Red Fir, White Fir: Abies procera (Synonym: Abies nobilis) -