LASTREA MONTANA. 



223 



plant the appearance of having had the extremities of all the 

 pinnae eaten off in a uniform manner by some insect or mollusk, 

 and the elegant outline destroyed. In other respects this plant 

 is normal. 



Fig. 177.— Apex of Frond. 



NowELLiANA, Moore. (Fig. 177.)— The Lastrea montana is 

 one of the least variable of the British Ferns, but this variety 

 is by far the most extraordinary hitherto discovered. It was 

 found by Mr. J. Nowell, and Mr. A. Stansfield, of Tocbnorden, 



