microscopic features of coca leaves of each variety and compare 

 them with the same characters in the archeological specimens. 

 As an aid to the identification of coca leaves and leaf 

 fragments, we have summarized in Table 3 those structural 

 details which are useful in the determination of cultivated coca 

 leaf specimens. Details of foliar venation are presented in Table 

 4 and selected leaf anatomical features are presented in Table 5. 

 A comprehensive review of taxonomically useful leaf structural 



(h 



(Rury, 1981). 



MATERIALS 



Archeological coca specimens were obtained from the follow- 

 ing museum collections: Ethnobotany Laboratory, Botanical 

 Museum, Harvard University; Lowie Museum of Anthro- 

 pology, University of California, Berkeley; and the Museo de 

 Historia Natural 'Javier Prado', Lima, Peru. Additional speci- 

 mens of archeological leaves were studied at the Peabody 

 Museum of Archaeology and Ethnology, Harvard University, 

 and of coca endocarps from the collection of Dr. Jeffrey 

 Parsons. All of these specimens originated in coastal Peru or 

 adjacent northernmost Chile; in most cases the leaves were 

 included in woven coca bags found in burials. The specimens at 

 the Museo de Historia Natural 'Javier Prado' were originally 

 found in coca bags preserved at the Museo Regional de lea, 

 Peru. They were supplied by the director, Sr. Alejandro Pezzia 

 A. to Dra. Maria Rostworowski, who in turn presented them to 

 Dr. Ram6n Ferreyra for identification (cf. Rostworowski, 1973: 

 205). The archeological coca specimens are listed in Table 1. 



Recent specimens of cultivated coca varieties were taken from 

 the herbarium specimens listed in Table 2. Location of voucher 

 specimens (including duplicate specimens) are listed according 

 to herbarium abbreviations suggested by Holmgren, Keuken 

 and Schofield (1981). All recent coca specimens were determined 

 by Plowman. 



302 



