| Adiantum pedatum L. | American maidenhairfern |
| Asplenium L. | spleenwort |
| platyneuron (L.) Oakes | ebony s. |
| resiliens Kunze | blackstem s. |
| Botrychium virginianum (L.) Sw. | rattlesnakefern |
| Camptosorus rhizophyllus (L.) Link | walkingfern |
| Cheilanthes feei Moore | fee lipfern |
| Cystopteris fragilis (L.) Bernh. | brittle bladderfern |
| Dryopteris Adans. | woodfern |
| thelypteris (L.) Gray | marshfern |
| Equisetum L. | horsetail; scouringrush |
| arvense L. | field h. |
| hyemale L. (including E. prelatum Raf.) | scouringrush |
| laevigatum A. Br. (including E. kansanum Schaffn.) | smooth h. |
| Isoëtes butleri Engelm. | quillwort |
| Marsilea mucronata A. Br. (M. vestita of Gray’s 7th ed., not Hook. & Grev.) | pepperwort |
| Notholaena dealbata (Pursh) Kunze | cloakfern |
| Onoclea sensibilis L. | sensitivefern |
| Ophioglossum vulgatum L. | adderstongue |
| Pellaea atropurpurea (L.) Link | purple cliffbrake |
| Polystichum Roth | hollyfern |
| acrostichoides (Michx.) Schott | christmasfern |
| Pteridium Gleditsch | bracken |
| aquilinum (L.) Kuhn |
| var. pubescens Underw. | western b. |
| var. latiusculum (Desv.) Underw. | eastern b. |
| Woodsia obtusa (Spreng.) Torr. | common woodsia |