FREDERIC A. WASHBURN M. D. 
Professor Merritt L. Fernald, 
Gray Herbarium, 
Linnean Avenue, 
Cambridge, Mass. 
Dear Professor Fernaid: 
As I said yesterday, I 
am immensely grateful for your help and interest. 
What you. told me yesterday morning is the infor¬ 
mation which I have been trying to obtain for 
several years. I can see that the problem is 
just as big as one would care to make it, but 
on the other hand, I feel confident that,from 
a practical point of view, the list of plants 
which you gave me represents all the important 
plants which fulfill the requirements of abun¬ 
dant distribution, of heavy pollination and 
of wind-borne pollen. 
My associates, at the hospital, were 
equally pleased with my good fortune and it looks 
as though your list might serve as our standard. 
Miss Lewis has typed the list and I send you a 
copy herewith. Perhaps you will like it for 
future reference and perhaps you may want to add 
to it, and if you do, I hope you Trill let me 
know. 
am 
With kind regards and many thanks, I 
FMR /l 
E nclosure 
