| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abies balsamea | Balsam Fir | 3 | 5 |
| Abies concolor | Colorado Fir, White fir | 0 | 2 |
| Abies fraseri | She Balsam, Fraser fir, Southern Balsam Fir | 1 | 3 |
| Abies lasiocarpa | Subalpine Fir, Alpine Fir | 2 | 2 |
| Abutilon theophrasti | China Jute, Velvetleaf, Butterprint Buttonweed Jute, China Mallow, Indian Velvet Leaf | 3 | 2 |
| Acacia farnesiana | Sweet Acacia, Perfume Acacia, Huisache | 2 | 2 |
| Acer spicatum | Mountain Maple | 2 | 2 |
| Agastache foeniculum | Anise Hyssop, Blue giant hyssop | 5 | 1 |
| Agoseris glauca | Mountain Dandelion, Pale agoseris, False agoseris | 1 | 1 |
| Allium cernuum | Nodding Onion, New Mexican nodding onion | 5 | 2 |
| Alnus viridis crispa | American Green Alder | 1 | 2 |
| Aloe ferox | Cape Aloe, Bitter Aloe, Red Aloe, Cape Aloe, Alligator Jaw Aloe | 2 | 5 |
| Ambrosia trifida | Giant Ragweed, Great ragweed, Texan great ragweed, Bitterweed, Bloodweed, Buffalo Weed, Horse Cane | 1 | 3 |
| Anaphalis margaritacea | Pearly Everlasting, Western pearly everlasting | 1 | 2 |
| Anchusa azurea | Anchusa, Italian bugloss | 2 | 1 |
| Andrographis paniculata | Green Chireta, Creat, Nilavembu, Kirayat, Chuan Xin Lian, King of Bitters | 1 | 4 |
| Anemone cylindrica | Candle Anemone | 0 | 2 |
| Anemone virginiana | Tall Thimbleweed | 0 | 1 |
| Angelica anomala | | 0 | 2 |
| Angelica dahurica | Bai Zhi | 2 | 3 |
| Anthriscus cerefolium | Chervil, Garden chervil | 3 | 2 |
| Aplectrum hyemale | Putty Root, Adam and eve | 0 | 1 |
| Aralia racemosa | American Spikenard | 3 | 3 |
| Arctostaphylos manzanita | Manzanita, Whiteleaf manzanita, Konocti manzanita, Contra Costa manzanita, Roof's manzanita, Wieslan | 3 | 1 |
| Arctostaphylos patula | Greenleaf Manzanita | 3 | 1 |
| Arctostaphylos uva-ursi | Bearberry | 3 | 4 |
| Arisaema triphyllum | Jack In The Pulpit, Dragonroot, Indian Turnip | 3 | 2 |
| Aristotelia chilensis | Macqui | 3 | 1 |
| Aristotelia serrata | | 3 | 1 |
| Artemisia biennis | Biennial Wormwood | 1 | 1 |
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