Nannyberry Viburnum lentago Honeysuckle
Neckweed (see Speedwell, purslane)
Nestcap Phyllotopsis nidulans Gilled Mushrooms
Nettle, Canada (see Nettle, Wood/ Canada Nettle)
Nettle, Dwarf Urtica urens Nettle
Nettle, False/ Bog Hemp Boehmeria cylindrica Nettle
Nettle, Slender Urtica gracilis Nettle
Nettle, Stinging Urtica dioica Nettle
Nettle, Tall Urtica procera Nettle
Nettle, Wood/ Canada Nettle Laportea canadensis Nettle
Nettletree (see Hackberry, American)
New York Ironweed (see Ironweed, New York)
Nightshade, Bittersweet/ Deadly Nightshade Solanum dulcamara Tomato/Nightshade
Nightshade, Common Solanum nigrum Tomato/Nightshade
Nightshade, Deadly (see Nightshade, Bittersweet/ Deadly Nightshade)
Nightshade, Enchanter's Circaea quadrisulcata Evening Primrose
Ninebark Physocarpus opulifolius Rose
Pilea purnila
Urtica urens
Boehmeria cylindrica
Urtica gracilis
Urtica dioica
Urtica procera
Laportea canadensis