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a single distinct one with a slight ridge running down its center. 

 The similarity between the two species is at times so great that 

 it requires close observation to distinguish them. In a small 

 glass fernery in my room is a plant that until very recently, in 

 fact until the preceding paragraph was written, I had taken for 

 A. montanum. but which is undoubtedly A. Bradleyi. This par- 

 ticular plant, with one of its companion species, was transplanted 

 to a rock about ten miles away from its original home, and after 

 several months was again removed to my fernery. The other 



ASPLENIUM BRADLEYI. 

 FlG. i— Plant one-half natural size. FIG. 2— Fruiting pinna. 



