NAMES, HISTORIES, AND CLASSIFICATION. 251 



Horseradish. — Less than 2000 years ; eastern temperate 

 Europe. 



Jerusalem Artichoke. — Probably ancient ; United States. 



Kaki. — Ancient ; Japan and China. 



Leek. — Over 2000 years ; Mediterranean basin. 



Lemon. — More tlian 2000 years ; India or China. 



Lettuce. — Over 2000 years ; Europe, Asia, and Africa. 



Maize. — Very ancient ; New Granada (?). 



Melon, Musk. — Less than 2000 years ; India, Beluchistan, 

 Guinea. 



Mushroom. — Less than 2000 years ; Northern hemisphere. 



Oats. — Over 2000 years ; temperate Europe. 



Okra. — Less than 2000 years ; tropical Africa. 



Olive. — More than 4000 years ; Syria, etc. 



Onion. — Over 4000 years ; Persia, Afghanistan, Beluchistan, 

 Palestine (?). 



Onion, Welsh. — Less than 2000 years ; Siberia. 



Orach. — Less than 2000 years ; northern Europe and Siberia. 



Orange. — Less than 2000 years in Europe ; probably ancient 

 far East ; China. 



Parsley. — Less than 2000 years; Europe, Algeria, and Leb- 

 anon. 



Parsnip. — Less than 2000 years ; central and southern Europe. 



Pea. — Over 2000 years ; Caucasus to Persia (?), India (?). 



Peach. — Over 4000 years ; China. 



Pear. — Over 4000 years ; temperate Europe and Asia. 



Pepper. — Over 500 years ; Brazil (?). 



Pineapple. — Over 500 years ; Mexico, Central America. 



Plum. — Over 2000 years ; Anatolia, north of Persia. There are 

 also many varieties of native species. 



Pomegranate. — More than 4000 years ; Persia, etc. 



Potato. — Over 500 years ; Chile, Peru. 



Pumpkin and Squash. — Over 500 years ; temperate North 

 America. 



Quince. —Over 4000 years ; north of Persia, south of the Cau- 

 casus, Anatolia. 



Radish. — Over 2000 years ; temperate Asia. 



