northern adder's-tongue
- kingdom: Plantae
- phylum: Tracheophyta
- class: Psilotopsida
- order: Ophioglossales
- family: Ophioglossaceae
- genus: Ophioglossum
- species: Ophioglossum pusillum
- Canada
Middletown
ConnecticutGary
IndianaCinnaminson
Riverton
New Jersey
United States