UMass Extension Weed Herbarium
| Common Name | Scientific Name | Family Name | |
|---|---|---|---|
| agrimony | Agrimonia gryposepala | Rosaceae - Rose Family | |
| agrimony, tall hairy | see - agrimony | ||
| akebia, five-leaf | Akebia quinata | Lardizabalaceae - Lardizabala Family | |
| alexanders, darkpurple | see - angelica, purplestem | ||
| alexanders, golden | Zizia aurea | Apiaceae (Umbelliferae) - Carrot Family | |
| alyssum, hoary | Berteroa incana | Brassicaceae (Cruciferae) - Mustard Family | |
| amaranth, spiny | Amaranthus spinosus | Amaranthaceae - Amaranth Family | |
| angelica, American | see - angelica, purplestem | ||
| angelica, purplestem | Angelica atropurpurea | Apiaceae (Umbelliferae) - Carrot Family | |
| aniseroot | Osmorhiza longistilis | Apiaceae (Umbelliferae) - Carrot Family | |
| anoda, crested | see - anoda, spurred | ||
| anoda, spurred | Anoda cristata | Malvaceae - Mallow Family | |
| apple-of-sodom | see - horsenettle | ||
| aster, white wood | Aster divaricatus | Asteraceae (Compositae) - Aster or Sunflower Family | |
| aster, whorled | Oclemena acuminata | Asteraceae (Compositae) - Aster or Sunflower Family | |
| avens, white | Geum canadense | Rosaceae - Rose Family |