| Abies fraseri | She Balsam, Fraser fir, Southern Balsam Fir | 1 | 3 |
| Abies grandis | Grand Fir, Giant Fir, Lowland White Fir | 2 | 2 |
| Abies lasiocarpa | Subalpine Fir, Alpine Fir | 2 | 2 |
| Acer macrophyllum | Oregon Maple, Bigleaf maple, Oregon Maple | 3 | 1 |
| Achillea millefolium | Yarrow, Boreal yarrow, California yarrow, Giant yarrow, Coast yarrow, Western yarrow, Pacific yarrow | 3 | 4 |