UMass Extension Weed Herbarium
| Common Name | Scientific Name | Family Name | |
|---|---|---|---|
| neckweed | see - speedwell, purslane | ||
| Nepalese browntop | see - stiltgrass, Japanese | ||
| nettle, stinging | Urtica dioica | Urticaceae - Nettle Family | |
| nightshade, bittersweet | Solanum dulcamara | Solanaceae - Nightshade Family | |
| nightshade, climbing | see - nightshade, bittersweet | ||
| nightshade, deadly | see - nightshade, eastern black | ||
| nightshade, eastern black | Solanum ptycanthum | Solanaceae - Nightshade Family | |
| nightshade, enchanter's | Circaea quadrisulcata | Onagraceae - Evening Primrose Family | |
| nimblewill, wiregrass | Muhlenbergia schreberi | Poaceae (Graminae) - Grass Family | |
| nipplewort | Lapsana communis | Asteraceae (Compositae) - Aster or Sunflower Family | |
| nut-grass | see - nutsedge, yellow | ||
| nutgrass, German | see - knawel | ||
| nutsedge, yellow | Cyperus esculentus | Cyperaceae - Sedge Family |