co grains are usually wide, flattened, slightly dented and 
with a small beak or overhang on the upper edge similar 
to that found in much Valle maize, in Mexican pyram- 
idal dents, and some North American dents. 
Just as in Guarani maize, planters made two main 
divisions of Cuzco maize, white and yellow, but unlike 
Guarani, there usually is no difference in the endosperm 
and both are floury. The large haciendas of Bolivia are 
selecting ears with 10 or 12 rows for their plantings and 
most of these show clearly by their shape and color that 
they have been crossed with morocho, the most common 
Valle maize. The yellow ears show most contamination 
with other races. Both white and yellow Cuzco may 
have calico pericarp, but most of the ears which exhibit 
other colors are contaminated by other races of maize. 
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