Phytogeographic Survey "> 
of North America 
A Consideration of the Phytogeography 
of the North American Continent, inclu- 
ding Mexico, Central America and the 
West Indies, together with the Evolution 
of North American Plant Distribution 
by 
John W. Harshberger, A. B., B. S., Ph. D. 
Assistant Professor of Botany, University of Pennsylvania; Fellow of the American 
Association for the Advancement of Science; Member of the Botanical Society of 
America; Academy of Natural Sciences of Philadelphia; Geographical Society of 
Philadelphia; American Philosophical Society; &c. &c. 
Map of North America showing the phytogeographic regions, 
ı8 Plates and 32 Figures in the text 
German Extract by ©. Drude 
Leipzig New York 
Wilhelm Engelmann G. E. Stechert & Co. 
1911 
