T'RE FA C E. 



In preparing this check list it has been based upon a collec- 

 tion of wild flowers found within the county of Beaver, and for 

 thirty-seven years many varieties have been carefully studied to 

 prove they are indigenous to this locality. Although botany is 

 taught quite generally in the various schools of our county, yet 

 with few exceptions, little or no attention is igiven to the 

 systematic preparation or preservation of native wild flowers. In 

 carrying on the search and preparing herbarium, careful study 

 has been made of geographical distribution, fertilization, and 

 development. To assist teachers, young naturalists, and those 

 who would like a botany in plain EngHsh ; the list drops the 

 orders, retaining the genera, with names of species in Latin. 

 The object of this check list has been to localize the flora ; giving 

 a record of the author's owai experiences, aided by careful 

 references to the standard works, giving priority to old names; 

 using Gray's botany in all disputed points. I am under obligations 

 to Prof. Leo. Lesquereux, late of Columbus, Ohio, in naming 

 many of the flora, ferns and mosses; Mrs. Lois H. Mansfield, 

 l\Irs. Mary K. Moody. Mrs. Olive C. Beauchamp and parties of 

 lady school teachers, who have camped with me along the Ohio 

 and Beaver rivers ; all assisting in discovering and naming new 

 species ; also studying the problems as to nativity and objects of 



