been collected by myself, mounted and preserved in the "Alfred 

 Twining Herbarium" in the Everhart Museum. With few 

 exceptions every plant named in this Flora is represented 

 in the above Herbarium. There is also in this Herbarium a col- 

 lection of Filices and fern allies, — an almost complete representa- 

 tion of the ferns of the United States, and many foreign ferns 

 with rare and odd varieties and forms. The Orchidaceae, 

 Liliaceae and Violaceae of the eastern half of the United States 

 are largely represented as well as the Cyperaceae and Gramineae. 

 The classifications of the more important genera have been veri- 

 fied by such expert authority as Prof. Charles S. Sargent, the 

 late Dr. Thomas C. Porter, the late Dr. Thomas Morong, the 

 late Prof. James A. Graves, and Prof. E. Brainerd. 



Outdoor recreation being a necessity, as well as a great 

 pleasure, I began late in 1900 the collection of the flora over 

 practically the same range of territory covered by Professors 

 Dudley and Thurston, as well as amateur collectors reported in 

 the 1892 Flora. In preparing the appended list of plants I have 

 followed the classification and nomenclature of the seventh 

 edition of Gray's Manual. The plants recorded in this Flora 

 which are not represented in Gray's Manual are marked with a 

 star and the proper authority is indicated. 



In the revision, preparation for publication, proof-reading 

 and effort to have the check list as nearly correct and authoritative 

 as possible, I have had the kindly and generous assistance of 

 Prof. R. N. Davis, Curator of the Everhart Museum, whose 

 love of the woods and plant life first led me to the study and 

 collection of our local flora. 



Alfred Twining. 



