Ahtk'Lk ill — hinis/f/c FiiiKji of THinois. Part 1. V>\ T. J. 

 HuRRiLi., Professor of Bofaiiv, Illinois Industrial I'niversity. 



INTKODUCTION 



Most of the ]»lants herein deserilted were cuilected in Illi- 

 nois during 1881 and 1882. by Mr. A. B. Seymour, who was 

 employed for the purpose by the Illinois State Laboratory of 

 Natural History. The entire collection consists of three thou- 

 sand seven hundred and eighty-four numbers, many of wliich 

 are of course duplicates, or are different stages of the same 

 species, leaving, however, a very large number of distinct spe- 

 cific forms — much larger than is usually su])])ose(l to exist in 

 our flora. 



The determinations have been made at the Illinois Indus- 

 trial L^niversity by myself, efficiently aided by Mr. Seymour. 

 For this work, besides the facilities offered l>y the library and 

 herbarium of the L^niversity, the State Laboratory of Natui-al 

 History furnished many books and specimens. Among the lat- 

 ter are the following sets of exsiccata: DeThilnien's Mycotheca 

 Universalis, Ellis' North American Fungi. Ravenel's Fungi 

 Carolinian i and Fungi Americani. 



The entire Avork has been stimulated and aided in every 

 possible way by Professor S. A. Forbes, as director of the State 

 Laboratory, and as an earnest and etficient worker in our rich 

 fields of scientific and practical biology. Acknowledgements 

 are also gratefully made for assistance in various ways, esi)e- 

 ciallyin the determiiuition of s])ecimens submitted to their in- 

 spection, to Prof. VV. (j. Farlow. and the State Hot.mist of New 

 York, Chas. H. Peck: to F. S. Earle, J. ('. Arthur, and < '. A. 

 Hart, for the contribution of specimens found In' them in Illi- 

 nois, and to Professor Wm. Trelease. .1. li. Fllis. and others for 

 several favors. 



