142 Bulletin 187 



be no reasonable doubt that the species has been recently naturalized 

 from another State. The common Locust (Robinia Pseudo-Acacia), 

 the greenhouse and garden pest Oralis repens, the three species of 

 Phlox — P. paniculata, P. stolonifera, and P. suhulata — are examples ; 

 and a score or more might be cited. But one familiar with the locali- 

 ties in which such species occur, as Myosotis arvensis, Chenopodium 

 capitatum, Mhnuliis moschatus, may not say with confidence that they 

 have in all instances been introduced into Vermont. The solution of 

 such a problem must be deferred, at least till our knowledge of the 

 distribution of the species and of its constant environment is well 

 nigh complete. 



The publication of the revised Flora is made under the auspices 

 of the Vermont Experiment Station, and under the direction of Dr. 

 George P. Burns, Secretary of the Vermont Botanical Club, and Pro- 

 fessor of Botany in the University of Vermont. Much of the edi- 

 torial work has been in charge of Mrs. Nellie F. Flynn of Burlington, 

 and Dr. Brainerd has assisted in the proof-reading and in the prepara- 

 tion of the index. 



For a clear understanding of the text the following explanations 

 should be kept in mind. 



1. All preferred names of species and varieties are printed in 

 boldface type, including foreign plants, or those not indigenous to the 

 territor}^ covered by the Britton and Brown Illustrated Flora or the 

 Gray Manual. These foreign plants, however, are designated in the 

 Vermont Flora by an asterisk placed after the specific or varietal 

 name. 



2. After the name in boldface type is given in parenthesis any 

 synonym preferred by Dr. Britton in the Illustrated Flora, and in 

 some instances a synonym that was used in the previous edition of 

 the Vermont Flora. 



3. In indicating the degree of frequency of occurrence, tour ad- 

 jectives have been used with a careful attempt at precision, namely, 

 "common," "frequent," "occasional," "rare." In each case this state- 

 ment regarding frequency is to be associated with the accompanying 

 statement regarding habita — thus "sandy soil, common" means com- 

 mon on sandy soils ; and such a plant may be rare in other habitats. 

 Where they are abundant in such stations the word "local" has been 

 oreferred. In cases where but five stations or less were known, there 

 have been enumerated, the name of the collector following in paren- 

 thesis. 



