Nailwort          

Nakedflower Ticktrefoil          

Narrowleaf Bittercress          

Narrowleaf Blue-eyed Grass      

Narrowleaf Bluecurls          

Narrowleaf Cattail      

Narrowleaf Cowwheat          

Narrowleaf Evening Primrose      

Narrowleaf Gumweed          

Narrowleaf Mountainmint          

Narrowleaf Paleseed          

Narrowleaf Pinweed          

Narrowleaf Plantain          

Narrowleaf Rose Gentian          

Narrowleaf Silkgrass      

Narrowleaf Vervain          

Narrowleaf Whitetop Aster          

Narrowleaf Wild Leek          

National Common Name           

Navel Cornsalad          

Necklace Gladecress          

Neckweed          

Needle Spikerush      

Needlegrass          

Needleleaf Rosette Grass      

Needlepod Rush      

Nepalese Browntop          

Nerveless Woodland Sedge      

Nestronia          

Netleaf Leather Flower          

Netted Chainfern          

Nettle          

Nettleleaf Goosefoot          

Nettleleaf Noseburn          

Nettleleaf Sage          

Nevada Rockcress          

New England Aster          

New Jersey Tea      

New York Fern      

New York Ironweed      

Nicandra          

Nightcaps          

Nightflowering Silene          

Nightshade