| Ophioglossum engelmannii Prantl |
| Currently Accepted Name: | Ophioglossum engelmannii Prantl |
| Locality: | United States. Tennessee. Rutherford: SE of Nashville on U.S. Hwy. 41 & 70S at S side of municipal airport turn left onto Donelson Pk. At 1 mi turn right on Couchville Pk. for 5.4 mi. to Lavgne-Couchville Pk. and turn right, continue for 3.3 mi. to Charltons Ln. turn left, continue for 0.9 mi. to collecting area at left side of road. |
| Habitat: | Growing in moss mat on shallow calcareous soil in cedar glades. |