| Latin name | Author | Common name(s) |
|---|---|---|
| Abies amabilis | Douglas ex Forbes | Pacific silver fir |
| Abies conolor | Lindl. ex Hildebr. | White Fir |
| Abies grandis | Lindl. | Grand fir |
| Abies magnifica | A. Murray | California red fir |
| Abies procera | Rehder | Noble fir |
| Acer glabrum | Torr. | Rocky Mountain maple |
| Acer macrophyllum | Pursh | Bigleaf maple |