PREFACE TO THE REVISED EDITION. 



The necessity of casting new plates has been taken advan. 

 tage of to enlarge and otherwise improve the present List oJ 

 Common Canadian Wild Plants. Descriptions of about on* 

 hundred and seventy additional species have been inserted, 

 and one or two which had a place in the old list have, in the 

 light of more thorough investigation, been struck out. 



The principal authority for the additions is Macoun's 

 Catalogue of Canadian Plants, issued by the Geological Sur- 

 vey, in which are included the results of the labours of many 

 assiduous workers. The author has, however, also to thank 

 his numerous correspondents in different parts of the country 

 for their very valuable suggestions. 



In the present Edition, it will be observed that the author- 

 ities for the names are given, and where these names differ 

 from those in Macoun's Catalogue (which should be in the 

 hands of every student), the synonym in the latter is also 

 given. 



BARRIE, February, 1889. 



