306 OHIO BIOLOGICAL SURVEY 



not appear safe, however, to assert that any are extinct except a few species like 

 Cypripedium reginae and Dasyphora fruticosa, which are so conspicuous that they 

 could hardly have been overlooked if they still occurred. These are included in the 

 list on Bigelow 's authority. 



Phylum, PTENOPHYTA 



Class, FELICES, Ferns. 



Subclass, EUSPORANGIATAE. 



Order, Ophioglossales. 

 Family, Ophioglossaceae, Adder-tongue Family. 



Ophioglossum vulgatum L. Adder-tongue. A few plants formerly grew in Stukey's 

 swamp. (Sec. 4, Berne Twp.) I have lujt been able to find any since the 

 station was linnbere<l in 1912. 



Botrychium obliquum Muhl. Obligue Grape-fern. 



Botrychium dissectum Spreng. Cutleaf Grape-fern. 



Botrychium virginianum (L.) Sw. A^irginia Grape-fern. Common. 



Subclass, Leptosporangiatae. 

 Felicales. 

 Osmundaceae, Royal-fern Family. 



Osmunda regalis L. Royal fern. 

 Osmunda claytoniaua L. Clayton fern. 

 Osmunda cinnamomea L. Cinnamon fern. 



Polypodiaceae, Polypody Family. 

 Polypodium vulgare L. Common polypody. Common on the edges of cliffs. 

 Adiantum pedatuni L. Maidenhair fern. Common. 

 Pteridium aquilinum (L.) Kuhn. Brake. 

 Pellaea atropurpurea (L.) Link. Purple Cliff-brake. Not known in our area and 



generally confined to limestone cliff's, but occurs on Blackhand Cliffs, near the 



village of Hanover, Licking Co. 

 Asplenium pinnatifidum Xutt. Pinnatifid Spleenwort. Common. 

 Asplenium platyneuron (L.) Oakes. (A. eboneum Ait.). Ebony Spleenwort. 

 Asplenium trichonianes L. Maidenhair Spleenwort. 



Asplenium pycnocarpan Spreng. (A. angustifolium Mx.). Narrow-leaf Spleenwort. 

 Asplenium montanum Willd. Mountain Spleenwort. In one hollow near Sugar 



Grove, at Pine Grove, on Little Rocky Branch, and at Cedar Falls. 

 Athyrium thelypteroides (Mx.) Desv. (Asplenium achrostichoides Sw.). Silvery 



Spleenwort. 

 Athyrium filixfoemina (L.) Roth. Lady Fern. No specimen. 

 Camptosorus rhizophyllus (L.) Link. Walking Fern. Commonly reputed a plant 



of calcareous regions, but common in our area. Not found, however, in the 



extremely humid hemlock ravines of the southern half of the area. 

 Polystichum achrostichoides (Mx.) Schott (Aspidium). Christmas Fern. 

 Dryopteris noveboracensis (L.) Gr. (Aspidium). New York Fern. 

 Dryopteris cristata (L.) Gr. (Aspidium). Crested Shield- fern. 



