INTRODUCTION. 



It may be said of the names used that they are essentially those of 

 the ** new nomenclature." Our aim has been to designate exactly 

 the species in mind without attempting to follow the various 

 changes that have been made since the list of the Torrey Club was 

 published. When nomenclature becomes more stable, this list 

 will be placed in accord with it in an appendix. In the arrange- 

 ment of genera and species we have chosen to follow that of the 

 sixth edition of "Gray's Manual," as it is the one most familiar to 

 those who will have use for this book. 



When more than one common name is given to a species, the 

 name that is most commonly used in our region is placed first. 

 The relative abundance of the species follows the common name, 

 and when this is qualified further along in the citation it is to be 

 taken to refer only to the clause with which the qualification is 

 connected. The other observations are designed mainly to aid 

 young botanists to a knowledge of some of the interesting facts 

 about the species which are frequently missing from the text- 

 books. 



The authority for the statements in the list is indicated by 

 the surnames of the observers in italic. When no locality is given 

 with the observ^ation, it should be understood to refer to localities 

 as follows: Coville, central and northern Chenango county; 

 Lucy, valley of the Chemung; Graves, Susquehanna county; 

 Fenno, Apalachin to Barton ; Brown, vicinity of Unadilla Forks ; 

 Barbour, Sayre and vicinity; Hoy, Delaware county; Clute, 

 Broome county. 



