Most sources treat this species (Southern Adder’s-Tongue) in North America as a synonym of the European Ophioglossum vulgatum. However, Weakley (2020, Flora Southeastern US) prefers the name Ophioglossum pycnostichum. Hopefully future studies of this species will uncover the relationship between North American and European populations.
There are 70 records in the project database.
GA | AL | WA | FR | CL | MO | HO | BA | BC | HA | CE | PG | AA | CV | CH | SM | KE | QA | CN | TA | DO | WI | SO | WO |