9.1,7.1, and 9.4 mm. These dimensions are much smaller than 
those of the modern race Confite Morocho which has an aver- 
age stalk diameter at the first internode of 16.0 mm. One of the 
five specimens had a split area on one side showing that it either 
had a tiller attached to it or was itself a tiller. This is the first 
archaeological evidence of tillering that we have encountered. 
(Plate 47) 
One of the pieces with roots attached had four internodes 
which, measured from the base upward, had lengths of 51, 93, 
143, and 141 mm. respectively. There was an undeveloped ear 
attached to the third node above the ground and the remains of 
a husk system attached to the fourth node. An internode pat- 
tern plotted from the data (Fig. 2) is similar to that of the 
modern Confite Morocho (Grobman ef al., 1961). 
cm 
16 
Fig. 2. Internode pattern up to the 
i ear-bearing node of a stalk found in level 2. 
gh The pattern is almost identical with that of the 
Peruvian race Confite Morocho. cf. Grobman 
etal., 1961, Fig. 51. 
Ten pieces of stalk in addition to the five with attached roots 
were found. The diameter of these ranged from 5.6 to 12.8mm., 
the average being 8.0 mm. 
LEAF SHEATHS: Sixty-four specimens of leaf sheaths were 
identified. All of these were completely glabrous even lacking 
the weak pubescence usually found in modern varieties around 
the upper margins. In this respect the sheaths resemble those of 
the prehistoric corn from the caves in Tehuacan Valley. Some 
of the sheaths appear to have fitted rather loosely around the 
stalks; this is a characteristic which we have noted in some 
modern popcorn varieties and which have caused us to wonder 
whether it represents an adaptation to growth in regions of 
PB se) 
