Petridophyta. 



OPHIOGLOSSACE.^. 

 Ophioglossum vulgatum Linn. 



BOTRYCHIUM TERNATUM (Thunb. ) S\V. 

 BOTRYCHIUM TERNATUM AUSTRALE (R. Br.) EatOn. 

 BOTRYCHIUM TERNATUM RUT^FOLIUM Man. 

 BOTRYCHIUM TERNATUM OBLIQUUM (Muhl.) Mildc. 



BOTRYCHIUM TERNATUM DissECTUM (Spreng.) Milde. 

 BOTRYCHIUM ViRGiNiANUM (Linn.) Sw. 



FILICES. 



POLYPODIUM VULGARE Linn. 



POLYPODIUM VULGARE /6i/V//(? BISSERATA MiUsp. Fl. W. Va. , 479 (1892). 



"A form with regularly doubly-serrate thinnish fronds. On 

 mossy boulders along the Blackwater fork of Cheat river." 



PoLYPODiUM poLYPODioiDES (Linn.) Hitch. Folypodiutn incanum Sw. 



Cheilanthes lanosa (Michx.) Watt. C. vestita (Spreng.) Sw. 



Cheilanthes gracilis (Fee.) Met. C lanuginosa, Nutt. 



Pell^^a atropurpurea (Linn.) Link. 



Pteris aquilina Linn. 



Adiantum pedatum Linn. 



Asplenium pinnatifidum Nutt. 



Asplenium tricho.manes Linn. 



Asplenium platyneuron (Linn.) Oakes. 



Asplenium montanum Willd. 



Asplenium angustifolium Michx. 



Asplenium acrostichioides Sw. 



Asplenium Filix-fcemina (Linn.) Bernh. 



Camptosorus rhizophyllus (Linn.) Link. 



Phegopteris Phegopteris (Linn.) Underw. 



Phegopteris hexagonoptera (Michx.) Fee. 



Phegopteris Dryopteris (Linn.) Fee. 



Dryopteris Thelypteris (Linn.) A. Gray. Aspidium Thelypteris (L.) 

 Sw. 



Dryopteris Noveboracense (Linn.) A. Gray. Aspidium Noveboracense 

 (L.) Sw. 



Dryopteris fragrans (Linn.) Schott. Aspidium fragrans (L.) Sw. 



190 



