the Museum, in this study is gratefully acknowledged. 
From the comparison of several morphological charac- 
ters — including leaf blades, sheaths, and inflorescences 
—I eoncluded that the Tripsacum growing in the 
Porvenir-Tarapoto locality of the Huallaga valley fall 
well within the range of variation of T'ripsacum australe. 
LITERATURE REFERENCES 
. Weberbauer, A. 1945.°° El mundo vegetal de los andes peruanos. ”’ 
Ministerio de Agricultura. Lima. 
MacBride, J. Francis. 1936. ‘‘Flora of Peru.’’ Part 1. Field 
Museum of Natural History. Publication No. 351. Chicago. 
Grobman, A., W. Salhuana and R. Sevilla (in collaboration with 
P. C. Mangelsdorf) 1961. Races of Maize in Peru: Their origin, 
evolution and classification.’’ Nat. Acad. of Sci., Nat. Res. Council 
U.S. Publ. 915. 
. Cutler, H.C. and E. Anderson. 1941. ‘‘A preliminary survey of 
the genus Tripsacum .’’ Ann. Mo. Bot. Gard. 28: 249-269. 
