southern exposure of the same material and ecological 

 conditions. 



Asplenium montanum Willd. Mountain Spleen- 

 wort. This is perhaps as rare as the wall rue, being 

 represented in the State herbarium by specimens from 

 Summit County, while Mr. Scott Harry., from whom I 

 obtained some excellent specimens, collected it at Graber's 

 Rocks. Tuscarawas County. 



Asplenium achrostichotdes Sw. Silvery Spleen- 

 wort. This is common and to be found in almost any 

 wet woods. Some species of insects prey upon it to such 

 an extent that fine, whole fruiting specimens are some- 

 times difficult to find. 



Asplenium filix-foemina (L.) Lady Fern. Of fre- 

 quent occurrence and wide distribution over the entire 

 State. It is commonly transplanted in the south and 

 makes a beautiful and attractive fern for the yard. The 

 varieties ovatum 3 incisum, laxum, distans, and angustum 

 have all been collected by the writer. 



Camptosorum rhizophyllus (L.) Walking Fern. 

 This is always interesting to the fern student who finds it 

 for the first time. It is widely distributed over the south- 

 ern half of the State, where large limestone rocks are 

 often fairly carpeted with it. I believe it no exaggeration 

 to say that I have seen ten thousand plants in the course 

 of a single day's walk in Greene County, Strong and 

 vigorous, it curls up to withstand drought. Forking 

 fronds are not uncommon. 



Nephrodium achrostichoides (Michx.) Christmas 

 Fern. Occurs everywhere, although more common in 

 the north. In Ohio it is distinctively a hillside fern. Its 

 varieties incisum and crispum, with their intermediate 

 forms, are of frequent occurrence. The conclusion may 

 be premature, but from observations of the same plants 

 extending over a period of three years. I venture the as- 

 sertion that the variety incisum is only a later form of 

 the type as I have repeatedly found them both when the 

 type form would be old and unfit for pressing, while the 



