OF DEN1SON UNIVERSITY. 99 



420. ASPARELLA Willd. 



911. A. Hystrix Willd. Bottle Brush-Grass. 

 Gravelly banks, rare; Station 3, Granville. 



CI. EQUISETACEAK. 



421. Equisetlm L. 



912. E. arvense L. Common Horsetail. 

 Creek banks in sandy or gravelly soil, common. 



913. E. limosum L. 



River banks, rare; Licking River at Toboso. 



914. E. hyemale L. Scouring-rush. 

 Creek banks, common. 



CII. FILICES. 



42 2. POLYPODIUM. 



915. P. vulgare L. 



Sandstone rocks, common in the eastern part of the county. 



423. Adiantum L. 



916. A. pedatum L. 

 Rich woods, common. 



424. Pteris L. 



917. P. aquilina L. Common Brake. 

 Rocky hillsides, somewhat rare; Tob'jso. 



425. Asplenium L. 



918. A. pinnatifidum Nutt. 



Dry rocks, very rare; Red Rock and Black Hand Rock, Toboso. 



919. A. Trichomanes L. 



Rocks, common in eastern part of county. 



920. A. ebeaeum Ait. 



Rocky woods, common in eastern part of county, found also at 

 Arbutus Ridge, Granville. 



921. A. angustifolium Michx. 

 Woods, somewhat common. 



