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. 
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. 
