CONTENTS 



Medican period, 1478—1601 7 



Bauhinian period, 1601—1694 8 



Tournefortian period, 1694-1735 8 



Linnean period, 1735—1789 9 



United States and Canada 10 



Greenland and Arctic America 14 



West Indies and Central America 15 



Jussieuan period, 1789-1819 , 18 



West Indies \ 18 



Candollean period, 1819—1840 20 



Greenland and Arctic America 22 



West Indies 23 



Hookerian period, 1840—1889 24 



United States and Canada 25 



Greenland and Arctic America 26 



West Indies 33 



Mexico and Central America 36 



Englerian period, 1889- 38 



United States and Canada 38 



Scandinavians 38 



Scandinavian- Americans 39 



Greenland and Arctic America 46 



West Indies 48 



Mexico and Central America 49 



