SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
WASHINGTON, D. C. 
December 6, 1920 
Dr. B, L. Robinson, 
Gray Herbarium Harvard University'-, 
Cambridge, Massachusetts. 
Dear Doctor Robinson: 
I am forwarding herewith a list of the Passiflora species 
collected in British Guiana by Ilr . Hitchcock. The identifica- 
tions are by Mr. E. P. Killip. I am sending Doctor Britton a 
list , also . 
Yours very truly, 
(Enclosure ) 
William R. l^axon, 
Associate Curator, 
Division of Plants 
