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Preface 



In accordance with the expressed wish of the late Doctor 

 Ever'hart, as a supplement to the collection of woods and seeds of 

 Lackawanna County, which he was making at the time he was 

 stricken with his last illness, labeled and now on exhibition in the 

 Museum, I presented my Herbarium of over 2,000 specimens to 

 the institution which bears its founder's name. Incorporated in 

 the Herbarium is a practically complete collection of the Flora 

 of this part of the state, particularly of Lackawanna and Luzerne 

 Counties. 



In further carrying out the wishes of Doctor Everhart I 

 have prepared this check list of the Flora of the above region 

 for publication. 



A preliminary list of the plants in the Lackawanna and 

 Wyoming Valleys, of which Prof. W. R. Dudley, then of Cornell 

 University, was the author, was published under the auspices of 

 the Lackawanna Institute of History and Science, in 1887. This 

 volume named 769 species as reported and classified. In 1892, 

 Professor Dudley, then connected with the Leland Stanford Uni- 

 versity of California, and Prof. Charles O. Thurston of the 

 Wyoming Seminary Scientific Department combined their per- 

 sonal notes, observations and collections with those of other 

 students of local botanical research and issued a very complete 

 catalog of "The Flowering Plants and vascular Cryptogams found 

 in and near the Lackawanna and Wyoming Valleys." This 

 volume contained the names of 107 orders and 974 species, to 

 which there were later addenda of 88 species, — a total of 1,062. 

 Of this number several have since been considered doubtful, 

 while others have become exterminated through forest fires or 

 advance of cultivated areas and are not represented in this check 

 list. 



The check list herewith presented contains the names of 

 115 orders and 1,534 species. The specimens have very largely 



