SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
WASHINGTON, D. C. 
Dr. B. L. Robinson, 
Gray Herbarium of Harvard University, 
Cambridge, Massachusetts. 
October 6, 1928. 
Dear Doctor Robinson: 
Doctor Trelease has just returned another lot of Piperaceae, and I en' 
close a list of determinations of the Pennell 1917 specimens. 
Sincerely yours, 
Ellsworth P. Killip 
Associate Curator, 
Division of Plants. 
Enclosure. 
