RARE FORMS OF FERNS.— II. 



A CUT-LEAVED CINNAMON FERN. 



Shortly after the description of Osmunda cinnamomea 

 bipinnatifida was published in the April number of this 

 Magazine specimens of a cut-leaved cinnamon fern were 

 received for name from Mrs. J. B. Clapp, who collected it 

 near Barnard, Vermont. Two of the middle pinnae are 



illustrated herewith, about two-thirds natural size. This 

 specimen is much like the form bipinnatifida but the cut- 

 ting is somewhat sharper than in that form. It is probably 

 more nearly related to the form incisum. This latter 

 form was described in The Fern Bulletin, Vol. 7, page 

 12, as follows : " If these peculiar forms are to be termed 



16 



