| Dennstaedtiaceae | |
Filix aquilina
| (L.) Woyn. | Hedwigia 56(5): 383 | 1915 |
| Dennstaedtiaceae | |
Filix bulbifera
| (L.) Underw. | Native Ferns (ed. 6) 119 | 1900 |
| Dennstaedtiaceae | |
Filix bulbifera
| Rydb. | | |
| Dennstaedtiaceae | |
Filix cristata
| Farw. | Rep. Michigan Acad. Sci. 18: 81 | 1916 |
| Dennstaedtiaceae | |
Filix filix-mas
| (L.) Farw. | Rep. Michigan Acad. Sci. 6: 201 | 1904 |
| Dennstaedtiaceae | |
Filix fragilis
| (L.) Gilib. | Exerc. Phyt. 558 | 1792 |
| Dennstaedtiaceae | |
Filix fragilis
| Underw. | Native Ferns (ed. 6) 119 | 1900 |
| Dennstaedtiaceae | |
Filix fragilis
| Rydb. | | |
| Dennstaedtiaceae | |
Filix montana
| Rydb. | | ** |
| Dennstaedtiaceae | |
Filix montana
| Farw. | Rep. Michigan Acad. Sci. 18: 82 | 1916 |
| Dennstaedtiaceae | |
Filix oregana
| Farw. | Rep. Michigan Acad. Sci. 18: 82 | 1916 |
| Dennstaedtiaceae | |
Filix patens
| (Sw.) Farw. | Annual Rep. Mich. Acad. Sci. 18: 82 | 1916 |
| Dennstaedtiaceae | |
Filix pumila
| Gilib. | | |
| Dennstaedtiaceae | |
Filix rigida
| Farw. | Rep. Michigan Acad. Sci. 18: 82 | 1916 |
| Dennstaedtiaceae | |
Filix simulata
| (Davenp.) Farw. | Rep. Michigan Acad. Sci. 6: 200 | 1904 |