:H5I 



PREFACE. 



The list includes those Angiosperms in the vicinity of Manhattan 

 which may be found in flower before the first of June. The only 

 Gymnosperm occurring here is Juniperus Virqiniaka, L. 



Through the kindness of Dr. X. L. Britton, I am enabled to 

 present the nomenclature and arrangement as they will probably appear 

 in the new Check List now being prepared by a committee of the A. 

 A. A. S. 



Experience has shown that Gray's Manual, though a most excellent 

 work for advanced students, is too extended for the use of the majority 

 of the beginners who can devote but ten weeks to the study of elementary 

 botany and with whom the preparation of a herbarium is subsidiary to a 

 training of the powers of observation. 



In giving the characters of orders and genera exceptions are 

 neglected. Ranunculace^e are described as being herbs, that is, they 

 usually are herbs. As the title implies, it is intended to differentiate 

 the plants included in the list only, hence the characters are usually 

 abbreviated and will not serve to definitely distinguish the groups from 

 all others. 



