88 The Ohio Naturalist. [Vol. X, No. 4, 



Aspidium marginale (L.) Marginal shield Fern. Common on 

 ledges or on steep wooded hill sides and even low wet wood lands. 



Aspidium spinulosum intermedium. Muhl. Common in woods 

 as well as in the deep ravines and on wet rocks of Mill Creek Park 

 and similar situations along the Mahoning. Annoyingly various 

 but nothing approaching specific types has yet been found. 



Cystopteris fagilis (L). Fragile Bladder Fern. As common 

 in all situations as it is various in form. In low woods as well as 

 on cliffs and rocks. 



Dicksonia punctilobula (Mx.) Hay scented Fern, Boulder 

 Fern. This graceful delicate green fern may be considered 

 quite common in this county, attaining perfection in i-ich 

 shadv woods as well as on wet shaded rocks and cliffs, in which 

 last location like the Bladder Fern its fronds become much 

 elongated and elegantly tapered. 



Onoclea sensibilis L. Sensitive Fern. Common in woods, 

 thickets and pastures everywhere. Some seasons there appears 

 a riot of that sportive so-called variety obtusilobata appearing to 

 illustrate the evolution or intermarriage of sterile and fertile 

 fronds. When they abound one season you search for them the 

 following year in vain. 



Osmunda regalis L. Flowering Fern. Found to some extent 

 in wet woods and swamps. 



Osmunda cinnamomea L. Cinnamon Fern. In swamps and 

 wet pastures, though not common as in the tamarack bogs of 

 some places in this corner of the state; a bog of this kind in 

 Boardman Township having been destroyed. 



Osmunda claytoniana L. Not abundant, though it may be 

 found generally distributed. 



Ophioglossum vulgatum (L). Adder's Tongue. For this 

 plant the writer has two stations in the county viz: Jackson 

 Township, June 9, 1900, where it has not been rediscovered, and 

 Ellsworth Township, June 13, 1909. This plant being so readily 

 overlooked is doubtless more common than would seem. 



Botrychium obliquum Muhl. Grape Fern and var. dissectum. 

 Their common form grows everywhere in woods and pasture and 

 spring together as if from a common root. 



Botrychium virginianum (L). More abundant than the last. 

 The size attained depending upon the moist richness of the woods 

 wdiere heavy shade is a factor. 



With the exception of Asplenium angustifolium, Asplenium 

 montanum, and Ophioglossum vulgatum, I have found all of the 

 above in Mill Creek Park, and probably two of the three will yet 

 be found there. 



Date of Publication, February 15, 1910. 



