liar oil 9, 1917 
Hr, Bayard long 
Academy of natural Science, 
Philadelphia, Pa. 
Bear Mr, long:- 
At tho suggestion of Professor 
Ponald, who says that you are Interested 
in the genus Polygonum, I an at this time 
Bonding you a portion of ss-num the type 
of anew variety of P, pennsylvanicum , 
with my compliments. 
Very truly, 
