Science magazines
- Narrow-leaved Stenogyne
- Nashville Crayfish
- Navajo Sedge
- Navasota Ladies'-tresses
- Nehe (Lipochaeta fauriei)
- Nehe (Lipochaeta kamolensis)
- Nehe (Lipochaeta lobata var. leptophylla)
- Nehe (Lipochaeta micrantha)
- Nehe (Lipochaeta tenuifolia)
- Nehe (Lipochaeta venosa)
- Nehe (Lipochaeta waimeaensis)
- Nellie Cory Cactus
- Nelson's Checker-mallow
- Neosho Madtom
- Neraudia Angulata
- Neraudia Ovata
- Neraudia Sericea
- Nevin's Barberry
- New Mexican Ridgenose Rattlesnake
- Newcomb's Snail