UMass Extension Weed Herbarium
| Common Name | Scientific Name | Family Name | |
|---|---|---|---|
| balsam, apple | see - cucumber, wild | ||
| balsam, himalaya | Impatiens glandulifera | Balsaminaceae - Touch-Me-Not Family | |
| bamboo, Japanese | see - knotweed, Japanese | ||
| bamboo, Mexican | see - knotweed, Japanese | ||
| barnyardgrass | Echinochloa crus-galli | Poaceae (Graminae) - Grass Family | |
| bean, wild | see - groundnut | ||
| bedstraw, annual | see - bedstraw, catchweed | ||
| bedstraw, catchweed | Galium aparine | Rubiaceae - Madder Family | |
| bedstraw, hairy | Galium pilosum | Rubiaceae - Madder Family | |
| bedstraw, smooth | Galium mollugo | Rubiaceae - Madder Family | |
| beggarslice | Hackelia virginiana | Boraginaceae - Borage Family | |
| beggarticks | Bidens frondosa | Asteraceae (Compositae) - Aster or Sunflower Family | |
| bellwort | see - Venus lookingglass | ||
| belvedere | see - kochia | ||
| bentgrass, creeping | Agrostis stolonifera | Poaceae (Graminae) - Grass Family | |
| big bluestem | Andropogon gerardii | Poaceae (Graminae) - Grass Family | |
| bindweed, field | Convolvulus arvensis | Convolvulaceae - Morningglory Family | |
| bindweed, fringed | see - knotweed, black fringed | ||
| bindweed, fringed | see - knotweed, black fringed | ||
| bindweed, hedge | Calystegia sepium | Convolvulaceae - Morningglory Family | |
| bird's nest | see - carrot, wild | ||
| bitter | see - dock, broadleaf | ||
| bittercress | Cardamine hirsuta | Brassicaceae (Cruciferae) - Mustard Family | |
| bittercress, cuckoo | Cardamine pratensis | Brassicaceae (Cruciferae) - Mustard Family | |
| bittersweet, asiatic | see - bittersweet, oriental | ||
| bittersweet, oriental | Celastrus orbiculatus | Celastraceae - Stafftree Family | |
| black-eyed susan | Rudbeckia hirta | Asteraceae (Compositae) - Aster or Sunflower Family | |
| bladder campion | Silene vulgaris | Caryophyllaceae - Pink Family | |
| blue devil | see - blueweed | ||
| bluecurls | Trichostema dichotomum | Lamiaceae (Labiatae) - Mint Family | |
| bluegrass, annual | Poa annua | Poaceae (Graminae) - Grass Family | |
| bluegrass, bulbous | Poa bulbosa | Poaceae (Graminae) - Grass Family | |
| bluejoint | see - big bluestem | ||
| bluestem, little | Andropogon scoparius | Poaceae (Graminae) - Grass Family | |
| bluets | Houstonia caerulea | Rubiaceae - Madder Family | |
| blueweed | Echium vulgare | Boraginaceae - Borage Family | |
| boneset | Eupatorium perfoliatum | Asteraceae (Compositae) - Aster or Sunflower Family | |
| bouncing bet | Saponaria officinalis | Caryophyllaceae - Pink Family | |
| bracken fern | Pteridium aquilinum | Polypodiaceae - Fern Family | |
| brome, downy | Bromus tectorum | Poaceae (Graminae) - Grass Family | |
| brome, drooping | see - brome, downy | ||
| brome, smooth | Bromus inermis | Poaceae (Graminae) - Grass Family | |
| broombeard grass | see - bluestem, little | ||
| buckhorn | see - plantain, narrowleaf | ||
| buckwheat, wild | Polygonum convolvulus | Polygonaceae - Smartweed or Buckwheat Family | |
| bugleweed, american | Lycopus americanus | Lamiaceae (Labiatae) - Mint Family | |
| bugloss, viper's | see - blueweed | ||
| burcucumber | Sicyos angulatus | Cucurbitaceae - Gourd Family | |
| burdock, common | Arctium minus | Asteraceae (Compositae) - Aster or Sunflower Family | |
| burdock, great | Arctium lappa | Asteraceae (Compositae) - Aster or Sunflower Family |