June, 1910.] 



New Varieties of Common Ferns. 



179 



NEW VARIETIES OF COMMON FERNS. 



L. S. Hopkins. 



For several years while collecting in the woods of Wayne 

 County, Ohio, I have noted here and there occasional plants of 

 Adiantum pedatum L. whose fronds differ very materially from 

 those of the normal type. The difference consists mainly in the 

 normal pinnules being replaced by linear branching pinnules 

 which are partly fertile and partly • sterile at their tips. This 

 transposition may occur either at the end or the middle of the 

 pinna, more often the latter. 



Fig. 1. Adiantum pedatum laciniatum Hopkins. 



One of these plants was transplanted^^to the yard of the 

 McFadden homestead in Wooster where it has been under obser- 

 vation for a period of four years. It seems to thrive in its new 

 home and each year has continued to produce fronds of the type 

 described. 



