Tonto. There are thirty tassel fragments, twenty-seven 
husks and fifty-two shanks from this site. These are not 
morphologically unusual or different from those of mod- 
ern maize. There are also two depauperate culms bearing 
small ears near the basal end; three carbonized cobs; and 
twenty-two boluses which are similar in character to 
those from Richards’ Caves. 
DiscusstIon 
The earliest reports of natural hybrids between maize 
and teosinte date back to the ‘‘Zea canina’’ of Watson 
(1891). Harshberger later reported (1896) the findings 
of Professor J. C. Segura, which indicated that these 
plants were maize-teosinte hybrids. This has been con- 
firmed by examining the Watson specimens preserved in 
the Gray Herbarium. Today, natural hybridization be- 
tween teosinte and maize occurs frequently in Guatemala 
and Mexico. Although Randolph (1955) considers such 
hybridizations to be rare, his conclusion is inconsistent 
with the literature, as well as with his own observations. 
For example, he reports (1955, p. 45) finding 45 F, and 
3 Fe teosinte-maize hybrids near the villages of Nojoya 
and San Antonio Huixta in northwestern Guatemala. 
Also from this region, where teosinte is the dominant 
plant over thousands of acres, Kempton and Popenoe 
(1937, p. 211) found in a collection of seed ‘‘several spikes 
of unmistakable hybrids.’’ These authors report further 
that the farmers in the Jutiapa region of Guatemala 
‘‘appreciated that teosinte hybridizes with corn and most 
informants lose no time in explaining that this plant will 
become corn in three generations if seed from the hybrid 
plant is grown.’” From Santa Ana Huixta, Guatemala, 
spikes of F; hybrids of maize and teosinte were present 
in teosinte collected by F. W. McBryde for the Harvard 
Botanical Museum (Mangelsdorf, unpub. ). Such hybrids 
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