TORREYA 



April, 1914. 

 Vol. 14 No. 4 



THE INTERNATIONAL PHYTOGEOGRAPHIC 

 EXCURSION IN AMERICA* 



By George E. Nichols 



During the summer of 1913 it was the privilege of the writer 

 to participate in the International Phytogeographic Excursion 

 in America. This excursion was organized and conducted by 

 Professor H. C. Cowles, of Chicago, to whom too much credit 

 cannot be given for his careful planning and efificient leadership. 

 The personnel of the party included ten Europeans and seven 

 Americans. The foreign members were Professor Adolf Engler, 

 of Berlin; Professor C. von Tubeuf, of Munich; Professor C. 

 Schroter, Dr. E. Riibel, and Dr. and Mrs. H. Brockmann- 

 Jerosch, of Zurich; Mr. and Mrs. A. G. Tansley, of Cambridge; 

 Dr. O. Paulsen, of Copenhagen; and Professor T. J. Stomps, of 

 Amsterdam. The American members, besides Professor Cowles 

 and the writer, were Professor and Mrs. F. E. Clements, of 

 Minneapolis; Professor and Mrs. A. Dachnowski, of Columbus; 

 and Dr. G. D. Fuller, of Chicago. The excursion was joined 

 by other American botanists in various parts of the country, and 

 some of these accompanied the party for one or two weeks. 

 Altogether the excursion was participated in by nearly two 

 hundred. The expedition left New York, westward bound, on 

 July 30, and the route traveled during the succeeding ten weeks 

 is indicated on the map (fig. i.) A short account of the trip is 

 here given, together with some reference to the more salient 

 features of the vegetation encountered.! Attention is confined 

 chiefly to the botanical side of the excursion, but it need hardly 

 be remarked that 'the hospitable reception accorded the party 



* Contribution from the Osborn Botanical Laboratory. 



t A more detailed account is being published by Tansley in the New Phytologist. 



[No. 3, Vol. 14, of TORREYA, Comprising pp, 30-53, was issued 17 March, 1914,] 



55 



