I hope that you agree with me when I say that our 
chief interest is to ascertain by actual specimens what 
the orchid flora of Central America consists of, and 
that a oritioal revision is more important than an 
attempt to describe great numbers of novelties. 
When you are in Salvador or Guatemal^keep a sharp 
look-out for terrestrial species of orchids. Set any 
that you find in quantity, as it is very necessary to 
have ample material for studies of variation. She rule 
that limits the number of specimens taken should be put 
aside with regard to the orchids. 
I hope that you have a successful and altogether 
enjoyable trip and that your efforts will help us to¬ 
ward a better understanding of the Central American 
flora. 
Yours sincerely. 
Dr. Paul C. Standley, 
lational Herbarium. 
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