132 OHIO BIOLOGICAL SUEVEY 



1-4. Phegopteris hexagonoptera (Mx.) Fee. (Dryopteris hexagon- 

 optera (Mx.) Chr). Broad Beech-fern. General. 



15. Phegopteris dryopteris (L.) Fee. (Dryopteris dryopteris (L.) 



Britt). Oak-fern. Geauga, Lake, Ashtabula, Wayne, Sum- 

 mit. 



Subfamily, pteridatae. 



16. Adiantum pedatum L. Maiden-hair-fern. General and common. 

 16a. Adiantum pedatum laciniatum Hopkins. "Wayne County. 



17. Pteridium aquilinum (L.) Kuhn. Eagle-fern. General. 



18. Pellaea atropurpurea (L.) Link. Purple Cliff-brake. Ottawa, 



Stark, Franklin, Licking, Clark, Greene, Highland, Adams. 



Subfamily, aspleniatae. 



19. Anchistea virginica (L.) Presl. Virginia Chain-fern. Ashta- 



bula, Defiance, Geauga, Portage, Wayne, Williams. 



20. Asplenium pinnatifidura Nutt. Pinnatifid Spleenwort. Mahon- 



ing, Licking, Fairfield, Hocking, Lawrence. 



21. Asplenium platyneuron (L.) Oakes. Ebony Spleenwort. Gen- 



eral except in the northeastern fourth of the state. 

 21a. Asplenium platyneuron x Camptosorus rhizophyllus (Asplenium 

 ebenoides Scott). Hocking County. 



22. Asplenium resiliens Kunze. Small Spleenwort. Adams County. 



23. Asplenium trichomanes L. Maidenhair Spleenwort. General 



except in the northwestern fourth of the state. 



24. Asplenium pycnocarpon Spreng. Narrow-leaf Spleenwort. 



General. 



25. Asplenium ruta-muraria L. Wall-rue Spleenwort. Highland, 



Greene. 



26. Asplenium montanum Willd. Mountain Spleenwort. Hocking, 



Fairfield, Summit, Mahoning, (Tuscarawas — Hopkins.) 



27. Athyrium thelypteroides (Mx.) Desv. Silvery Spleenwort. 



General. 



28. Athyrium filix-foemina (L.) Roth. Lady-fern. General. 



29. Camptosorus rhizophyllus (L.) Link. Walking-fern. General. 



Subfamily, dryopteridatae. 



30. Dryopteris noveboracensis (L.) Gr. New York Shield-fern. 



General. 



