444 



ORIGIN OF CULTIVATED PLANTS. 



SPECIES OF AMERICAN ORIGIN. 

 Cultivated foe the Uxbeeground Parts. 



Arracaclia Arracacha esculenta, T 



(l). 

 Jerusalem Artichoke Helianthns 



tuberosus, 7f. 

 Potato Solanuin tuberosum, ^. 

 Sweet Potato Convolvulus batatas, 



T- 



Manioc Manihot utilissimn, . 

 Arrowroot Maranta aruudiuacea, "y:. 



E. 



E.(?) 



E. 

 D. 



E. 



(?) 



New Granada (?). 



North America (Indiana) . 



Chili, Pern (?). 



Tropical America (where ?). 



East of tropical Brazil. 

 Tropical (continental ?) 

 America. 



