colleague O. E. Schulz (1907). Many authors, however, unaware 

 of the existence of the coastal variety Trujillo coca, have 

 suggested that the presence of archeological coca on the 

 Peruvian coast implied extensive, early trans-Andean trade in 

 coca from the eastern Andes to the coast (Sauer, 1950; Lanning, 

 1967; Cohen, 1978; Dobkin de Rios, 1981). Although trade in 

 leaves of E. Coca var. Coca from the eastern Andes to the coast 

 may have occurred on a small scale, there is little evidence for it 

 from archeological remains. Only Mortimer (1901) reported and 

 illustrated leaves of this variety from the coast (from a burial at 

 Arica, Chile) which from the illustrations are clearly referable to 

 £. Coca var. Coca. This suggests that at least some leaves of this 

 variety may have been traded across the Andes but most likely 

 Trujillo coca was the principal variety used on the coast. 



Although samples of archeological coca discovered to date are 

 limited primarily to Trujillo coca from coastal Peru, future 

 discoveries of archeological leaves have great potential for 

 shedding new light on the early evolution, domestication and 

 diffusion of coca in the Andean region and may possibly serve as 

 cuhural markers for early human contacts in the area. It is 

 hoped that this study will stimulate archeologists to search for 

 remains in older sites and in new areas in order to elucidate 

 further the early events in the evolution of cultivated coca. 



ACKNOWLEDGMENTS 



We would like to thank the following persons and institutions 

 for permitting us to study their collections of archeological coca: 

 Prof. Ram6n Ferreyra, Museo de Historia Natural 'Javier 

 Prado\ Lima, Peru; Dr. Larry Dawson, Lowie Museum of 

 Anthropology, University of California, Berkeley; Prof. Richard 

 Evans Schultes, Botanical Museum of Harvard University; 

 Peabody Museum of Archaeology and Ethnology, Harvard 

 University; and Dr. Jeffrey Parsons. We are also grateful to the 

 curators of the following herbaria for providing access to their 

 collections of Erythroxylum: COL, ECON, F, GH, K, MOL, 

 NCSC, NCU, NY, P, SEL, US, and USM. 



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