126 Annals of the Carnegie Museum. 



O'Hara Township, swamp near Poor Farm, May, 1900, D. A. 

 Atkinson. 



O'Hara Township, St^uaw Run, June, 1900. W. N. Miller. 



-i= 0. cinnamomea Linnreus. Cinnamon fern. 



* 0. Claytoniana Linnreus. Interrupted fern. 



OPHIOGLOSSACEiE Presl. 



ADDER' S-TONGUE FAMILY. I-i. 



OPHIOGLOSSUM Linn.^us. 

 ■j- 0. vulgatum Linnaeus. Adder's tongue. 



BOTRYCHIUM Swartz. 

 f B. Lunaria (Linnaeus). Moonwort. 



* B. obliquum Muhlenberg. Oblique grape fern. 



* B. dissectum Sprengel. Cut-leaf grape fern. 



-'^ B. Virginianum (Linnaeus). Virginia grape fern. 



LYCOPODIACEiE Michaux. 



CLUBMOSS FAMILY. I-9. 



LYCOPODIUM Linnffius. 



* L. lucid ulum Michaux. Shining club-moss. 



* L. complanatum Linnaeus. Trailing club-moss. 



Moon Township, Tomlinson's Hollow, near Carnot, April 18, 

 1898; Miss Lily Dally. 



O'Hara Township, Squaw Run, October, 1899; J. L. Graf. 



